CVE-2025-49796

CRITICALPre-NVD 9.19.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2025-06-16. A secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.6%CVSS: 9.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can trigger a memory corruption issue. This flaw allows an attacker to craft a malicious XML input file that can lead libxml to crash, resulting in a denial of service or other possible undefined behavior due to sensitive data being corrupted in memory.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity91% × 45%
Impact severity (EG Severity): CVSS 9.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation1.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.6%
EPSS %ILE
74th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.1): severity, escalated by confirmed exploitation. This CVE's 9.1 is its impact severity (EG Severity), not escalated.

EG Severity
9.1 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
1.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-19). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 16, 2025

Last Modified

October 8, 2026

Advisory Details (10)

Auto-updated Sep 15, 2026
Patch available. Sources: redhat.
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7 Extended Lifecycle Support.

https://access.redhat.com/errata/RHSA-2025:12240
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Serv

https://access.redhat.com/errata/RHSA-2025:12239
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.2 Advanced Update Support.

https://access.redhat.com/errata/RHSA-2025:12237
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2025:12199
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2025:12099
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP So

https://access.redhat.com/errata/RHSA-2025:12098
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.4 Extended Update Support.

https://access.redhat.com/errata/RHSA-2025:11580
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2025:10699
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2025:10698
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2025:10630

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython3-libxml2 (2.12.7+dfsg+really2.9.14-0.4ubuntu0.2) @ plucky2026-10-17ubuntu
redhatopenshift/ose-rhel-coreos-9:415.92.202609140326-02026-09-28redhat
redhatopenshift/ose-rhel-coreos-9:416.94.202609011112-02026-09-10redhat
redhatlibxml2-main-2.15.2-0.3.hum12026-04-10redhat
redhatopenshift-serverless-1/logic-swf-devmode-rhel8:1.36.0-72026-01-22redhat
redhatcompliance/openshift-file-integrity-rhel8-operator:v1.32025-11-21redhat
redhatopenshift/ose-rhel-coreos-8:412.86.202510291903-02025-11-13redhat
redhatopenshift/ose-rhel-coreos-9:414.92.202510211419-02025-10-30redhat
redhatopenshift/ose-rhel-coreos-9:418.94.202510230424-02025-10-29redhat
redhatlibxml22025-10-27redhat
redhatopenshift/ose-rhel-coreos-9:413.92.202510150118-02025-10-23redhat
redhatopenshift/ose-rhel-coreos-9:417.94.202510112152-02025-10-22redhat
redhatopenshift/ose-rhel-coreos-9:4.19.9.6.202510140714-02025-10-22redhat
redhatopenshift/ose-rhel-coreos-9:4.20.9.6.202509251656-02025-10-21redhat
redhatcert-manager/jetstack-cert-manager-rhel9:v1.16.5-17605157572025-10-16redhat
redhatweb-terminal/web-terminal-tooling-rhel9:1.11-82025-09-15redhat
redhatweb-terminal/web-terminal-tooling-rhel9:1.12-42025-09-15redhat
redhatinsights-proxy/insights-proxy-container-rhel9:1.5.5-17545043432025-08-07redhat
redhatdiscovery/discovery-server-rhel9:2.0.1-17544787272025-08-06redhat
redhatlibxml2-0:2.9.1-6.el7_9.102025-07-30redhat
redhatlibxml2-0:2.9.7-9.el8_4.62025-07-30redhat
redhatlibxml2-0:2.9.7-9.el8_2.32025-07-30redhat
redhatlibxml2-0:2.9.7-16.el8_8.92025-07-30redhat
redhatlibxml2-0:2.9.13-3.el9_2.72025-07-29redhat
redhatlibxml2-0:2.9.7-13.el8_6.102025-07-29redhat
redhatlibxml2-0:2.9.13-1.el9_0.52025-07-29redhat
redhatlibxml2-0:2.9.13-10.el9_42025-07-23redhat
redhatlibxml2-0:2.9.7-21.el8_10.12025-07-09redhat
redhatlibxml2-0:2.9.13-10.el9_62025-07-09redhat
redhatlibxml2-0:2.12.5-7.el10_02025-07-08redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 8 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • every version up to 2.13.9-r0: fixed in 2.13.9-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • every version up to 2.13.9-r0: fixed in 2.13.9-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • every version up to 2.13.9-r0: fixed in 2.13.9-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • every version up to 2.13.9-r0: fixed in 2.13.9-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libxml22.9.10+dfsg-6.7 ... 2.9.10+dfsg-6.7+deb11u7 (8 versions)
  • every version up to 2.9.10+dfsg-6.7+deb11u8: fixed in 2.9.10+dfsg-6.7+deb11u8
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libxml22.9.14+dfsg-1.2, 2.9.14+dfsg-1.3~deb12u1, 2.9.14+dfsg-1.3~deb12u2
  • every version up to 2.9.14+dfsg-1.3~deb12u3: fixed in 2.9.14+dfsg-1.3~deb12u3
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • every version up to 2.12.7+dfsg+really2.9.14-2: fixed in 2.12.7+dfsg+really2.9.14-2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • every version up to 2.12.7+dfsg+really2.9.14-2: fixed in 2.12.7+dfsg+really2.9.14-2
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(10)

Data Freshness Timeline

(refreshed 28× in last 7d / 64× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 96 of 335 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 239 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 22:06 UTCEG score recompute
  2. 2026-10-19 22:06 UTCVendor advisory
  3. 2026-10-19 22:05 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  4. 2026-10-19 16:31 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  5. 2026-10-18 20:54 UTCEG score recompute
  6. 2026-10-18 20:54 UTCVendor advisory
  7. 2026-10-18 20:54 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  8. 2026-10-18 16:31 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  9. 2026-10-18 05:29 UTCEG score recompute
  10. 2026-10-17 20:32 UTCEG score recompute
  11. 2026-10-17 20:32 UTCVendor advisory
  12. 2026-10-17 20:32 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  13. 2026-10-17 16:33 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  14. 2026-10-16 20:36 UTCEG score recompute
  15. 2026-10-16 20:36 UTCVendor advisory
  16. 2026-10-16 20:35 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  17. 2026-10-16 16:38 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  18. 2026-10-15 17:56 UTCEG score recompute
  19. 2026-10-15 17:56 UTCVendor advisory
  20. 2026-10-15 17:56 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  21. 2026-10-15 16:31 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  22. 2026-10-14 16:31 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  23. 2026-10-14 11:48 UTCEG score recompute
  24. 2026-10-14 11:48 UTCVendor advisory
  25. 2026-10-14 11:48 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
Show 71 more
  1. 2026-10-13 16:32 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  2. 2026-10-13 10:57 UTCVendor advisory
  3. 2026-10-13 10:57 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  4. 2026-10-12 17:00 UTCEG score recompute
  5. 2026-10-12 16:33 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  6. 2026-10-12 11:01 UTCVendor advisory
  7. 2026-10-12 11:01 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  8. 2026-10-11 20:33 UTCEG score recompute
  9. 2026-10-11 18:45 UTCEG score recompute
  10. 2026-10-11 15:20 UTCEG score recompute
  11. 2026-10-11 13:47 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  12. 2026-10-10 19:59 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  13. 2026-10-09 20:06 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  14. 2026-10-08 21:21 UTCEG score recompute
  15. 2026-10-08 21:21 UTCVendor advisory
  16. 2026-10-08 21:21 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  17. 2026-10-08 21:04 UTCEG score recompute
  18. 2026-10-08 21:04 UTCVendor advisory
  19. 2026-10-08 21:03 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  20. 2026-10-08 17:10 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  21. 2026-10-07 23:47 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  22. 2026-10-06 15:17 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  23. 2026-10-05 17:42 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  24. 2026-10-03 14:24 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  25. 2026-10-01 19:49 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  26. 2026-09-30 15:02 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  27. 2026-09-28 13:50 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  28. 2026-09-28 02:19 UTCEG score recompute
  29. 2026-09-28 02:19 UTCVendor advisory
  30. 2026-09-28 02:19 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  31. 2026-09-28 02:12 UTCEG score recompute
  32. 2026-09-28 02:12 UTCVendor advisory
  33. 2026-09-28 02:12 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  34. 2026-09-27 13:45 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  35. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  36. 2026-09-26 00:25 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  37. 2026-09-24 14:02 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  38. 2026-09-23 13:47 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  39. 2026-09-21 21:06 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  40. 2026-09-18 19:27 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  41. 2026-09-18 18:33 UTCEG score recompute
  42. 2026-09-18 18:33 UTCVendor advisory
  43. 2026-09-18 18:33 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  44. 2026-09-18 17:30 UTCEG score recompute
  45. 2026-09-18 17:30 UTCVendor advisory
  46. 2026-09-18 17:30 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  47. 2026-09-17 19:29 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  48. 2026-09-16 14:07 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  49. 2026-09-15 03:09 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  50. 2026-09-12 15:00 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  51. 2026-09-11 14:52 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  52. 2026-09-11 09:36 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  53. 2026-09-10 10:38 UTCEG score recompute
  54. 2026-09-10 10:38 UTCVendor advisory
  55. 2026-09-10 10:38 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  56. 2026-09-10 09:34 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  57. 2026-09-10 09:32 UTCEG score recompute
  58. 2026-09-10 09:32 UTCVendor advisory
  59. 2026-09-10 09:32 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  60. 2026-09-08 21:59 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  61. 2026-09-07 16:00 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  62. 2026-09-06 13:46 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  63. 2026-09-06 04:25 UTCEG score recompute
  64. 2026-09-06 04:25 UTCVendor advisory
  65. 2026-09-06 04:25 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  66. 2026-09-06 04:10 UTCEG score recompute
  67. 2026-09-06 04:10 UTCVendor advisory
  68. 2026-09-06 04:10 UTCGHSA enrichmentGHSA-83xx-9f6p-vwfj · GitHub severity CRITICAL · GitHub CVSS 9.1
  69. 2026-09-05 15:28 UTCEPSS rescoreEPSS 1.5% · 71st percentile
  70. 2026-09-04 05:06 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  71. 2026-09-02 14:11 UTCEPSS rescoreEPSS 1.5% · 72nd percentile

Frequently asked(5)

What is CVE-2025-49796?
CVE-2025-49796 is a critical-severity vulnerability; its CVE record was published on June 16, 2025. A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can trigger a memory corruption issue. This flaw allows an attacker to craft a malicious XML input file that can lead libxml to crash, resulting in a denial of service or other possible undefined…
When was CVE-2025-49796 made public?
CVE-2025-49796 was made public on June 11, 2025: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on June 16, 2025. EchelonGraph's copy of the record carries a last-modified date of October 8, 2026; the record at its source may have been updated since.
Is CVE-2025-49796 actively exploited?
CVE-2025-49796 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.6% probability of exploitation in the next 30 days (74th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-49796?
CVE-2025-49796 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2025-49796?
A fix for CVE-2025-49796 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-49796 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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