CVE-2025-59375

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2025-09-15. The CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.3%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
The EG Score, 7.5 of 10.
Exploitation1.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
1.3%
EPSS %ILE
69th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (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

September 15, 2025

Last Modified

July 14, 2026

Advisory Details (7)

Auto-updated May 1, 2026
Patch available.
Web page

oss-security - Prosody XMPP server security advisory 2026-04-31 (multiple vulnerabilities)

http://www.openwall.com/lists/oss-security/2026/05/01/5
Web page

oss-security - libexpat 2.7.2 fixes CVE-2025-59375 (DoS, CWE-770)

http://www.openwall.com/lists/oss-security/2025/09/16/2
Web page

OSS Fuzz

https://issues.oss-fuzz.com/issues/439133977
Web page

[CVE-2025-59375] Start tracking and limiting use of dynamic memory (fixes #1018) by hartwork · Pull Request #1034 · libexpat/libexpat · GitHub

https://github.com/libexpat/libexpat/pull/1034
Web page

[CVE-2025-59375] OSS-Fuzz/ClusterFuzz finding 439133977 · Issue #1018 · libexpat/libexpat · GitHub

https://github.com/libexpat/libexpat/issues/1018
Web page

libexpat/expat/Changes at R_2_7_2 · libexpat/libexpat · GitHub

https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes
Web page

libexpat/expat/Changes at 676a4c531ec768732fac215da9730b5f50fbd2bf · libexpat/libexpat · GitHub

https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74

Vendor Advisories for CVE-2025-59375(20)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatpython3.12-0:3.12.13-2.el9_82026-05-19redhat
redhatpython3.12-0:3.12.13-2.el10_22026-05-19redhat
redhatpython3.12-0:3.12.13-2.el8_102026-04-27redhat
redhatexpat-main-2.7.5-1.hum12026-03-23redhat
redhatrhaiis/vllm-rocm-rhel9:17721606252026-02-27redhat
redhatrhaiis/vllm-cuda-rhel9:17721605932026-02-27redhat
redhatmingw-fontconfig-0:2.12.6-4.el8_102026-02-26redhat
redhatrhcos-415.92.202601271320-02026-02-05redhat
redhatrhceph/rhceph-8-rhel9:17695123832026-02-02redhat
redhatrhcos-414.92.202601191325-02026-01-30redhat
redhatopenshift-serverless-1/logic-swf-devmode-rhel8:1.36.0-72026-01-22redhat
redhatrhcos-417.94.202601120213-02026-01-22redhat
redhatrhcos-4.19.9.6.202601130152-02026-01-22redhat
redhatrhcos-413.92.202601130113-02026-01-22redhat
redhatrhcos-416.94.202601071926-02026-01-15redhat
redhatrhcos-418.94.202601071817-02026-01-15redhat
redhatrhcos-412.86.202601061735-02026-01-15redhat
redhatrhcos-4.20.9.6.202601052146-02026-01-14redhat
redhatquay/quay-builder-rhel9:17679793552026-01-13redhat
redhatdiscovery/discovery-ui-rhel9:17679045732026-01-08redhat
redhatspice-client-win-0:8.10-3.el8_8.12026-01-05redhat
redhatspice-client-win-0:8.10-3.el8_2.12026-01-05redhat
redhatspice-client-win-0:8.10-3.el8_4.12026-01-05redhat
redhatspice-client-win-0:8.10-3.el8_6.12026-01-05redhat
redhatadvanced-cluster-security/rhacs-scanner-db-slim-rhel8:4.82025-12-17redhat
redhatrhaiis/vllm-rocm-rhel9:3.2.5-17655526032025-12-17redhat
redhatrhceph/rhceph-8-rhel9:82025-12-16redhat
redhatadvanced-cluster-security/rhacs-scanner-db-slim-rhel8:4.72025-12-16redhat
redhatrhaiis/vllm-tpu-rhel9:3.2.5-17655526192025-12-15redhat
redhatrhaiis/model-opt-cuda-rhel9:3.2.5-17653611842025-12-15redhat

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

(18 across 10 ecosystems)
Debian:11(3)
PackageVulnerable rangeFix by version rangeDependents
expat2.2.10-2 ... 2.8.2-1~deb13u1 (47 versions)
  • every version on: no fix on record
—
firefox-esr102.1.0esr-1 ... 91.9.1esr-1~deb9u1 (255 versions)
  • every version up to 140.9.0esr-1~deb11u1: fixed in 140.9.0esr-1~deb11u1
—
thunderbird1:102.0.1-1 ... 1:91.9.0-1~deb9u1 (306 versions)
  • every version up to 1:140.9.0esr-1~deb11u1: fixed in 1:140.9.0esr-1~deb11u1
—
Debian:12(3)
PackageVulnerable rangeFix by version rangeDependents
expat2.5.0-1, 2.5.0-1+deb12u1, 2.5.0-1+deb12u2, 2.5.0-1+deb12u3
  • every version up to 2.5.0-1+deb12u4: fixed in 2.5.0-1+deb12u4
—
firefox-esr102.11.0esr-1 ... 140.8.0esr-1~deb13u1 (161 versions)
  • every version up to 140.9.0esr-1~deb12u1: fixed in 140.9.0esr-1~deb12u1
—
thunderbird1:102.11.0-1 ... 1:140.9.0esr-1~deb11u1 (191 versions)
  • every version up to 1:140.9.0esr-1~deb12u1: fixed in 1:140.9.0esr-1~deb12u1
—
Debian:13(3)
PackageVulnerable rangeFix by version rangeDependents
expat2.7.1-2 ... 2.8.1-1 (9 versions)
  • every version up to 2.8.2-1~deb13u1: fixed in 2.8.2-1~deb13u1
—
firefox-esr128.13.0esr-1 ... 140.8.0esr-1~deb13u1 (36 versions)
  • every version up to 140.9.0esr-1~deb13u1: fixed in 140.9.0esr-1~deb13u1
—
thunderbird1:128.13.0esr-1 ... 1:140.9.0esr-1~deb11u1 (46 versions)
  • every version up to 1:140.9.0esr-1~deb13u1: fixed in 1:140.9.0esr-1~deb13u1
—
Debian:14(3)
PackageVulnerable rangeFix by version rangeDependents
expat2.7.1-2
  • every version up to 2.7.2-1: fixed in 2.7.2-1
—
firefox-esr128.13.0esr-1 ... 140.9.0esr-1~deb13u1 (39 versions)
  • every version up to 140.9.0esr-1: fixed in 140.9.0esr-1
—
thunderbird1:128.13.0esr-1 ... 1:140.9.0esr-1~deb13u1 (48 versions)
  • every version up to 1:140.9.0esr-1: fixed in 1:140.9.0esr-1
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
expat—
  • every version up to 2.7.2-r0: fixed in 2.7.2-r0
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
expat—
  • every version up to 2.7.2-r0: fixed in 2.7.2-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
expat—
  • every version up to 2.7.2-r0: fixed in 2.7.2-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
expat—
  • every version up to 2.7.2-r0: fixed in 2.7.2-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
expat—
  • every version up to 2.7.2-r0: fixed in 2.7.2-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
expat—
  • every version up to 2.7.2-r0: fixed in 2.7.2-r0
—

Weakness Classification(1)

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

Additional Vendor Advisories

(24)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 31× 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 93 of 203 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. 7 repeat rows among the latest 100 are merged into the row they repeat. The 110 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 16:53 UTCEG score recompute
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  3. 2026-10-11 20:27 UTCEG score recompute
  4. 2026-10-11 18:39 UTCEG score recompute
  5. 2026-10-11 15:14 UTCEG score recompute
  6. 2026-10-11 13:47 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  7. 2026-10-10 19:59 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  8. 2026-10-09 20:06 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  9. 2026-10-08 17:10 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  10. 2026-10-07 23:47 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  11. 2026-10-06 15:17 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  12. 2026-10-06 09:44 UTCOSV refresh
  13. 2026-10-05 17:42 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  14. 2026-10-04 23:21 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  16. 2026-10-01 19:49 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  17. 2026-09-30 15:02 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  18. 2026-09-28 13:50 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  19. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  20. 2026-09-26 00:25 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  21. 2026-09-24 14:02 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  22. 2026-09-23 13:47 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  23. 2026-09-21 21:06 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  24. 2026-09-20 20:15 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  25. 2026-09-19 15:42 UTCEPSS rescoreEPSS 1.3% · 69th percentile
Show 68 more
  1. 2026-09-18 19:27 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  2. 2026-09-17 19:29 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  3. 2026-09-16 17:39 UTCOSV refresh
  4. 2026-09-16 14:07 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  5. 2026-09-16 05:14 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  6. 2026-09-13 16:46 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  7. 2026-09-12 15:00 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  8. 2026-09-11 14:52 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  9. 2026-09-11 09:36 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  10. 2026-09-10 09:34 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  11. 2026-09-08 21:59 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  12. 2026-09-07 16:00 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  13. 2026-09-06 13:47 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  14. 2026-09-05 15:28 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  15. 2026-09-04 05:06 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  16. 2026-09-02 14:11 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  17. 2026-09-01 13:53 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  18. 2026-09-01 04:38 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  19. 2026-08-30 19:16 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  20. 2026-08-30 01:21 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  21. 2026-08-28 21:40 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  22. 2026-08-28 17:23 UTCOSV refresh
  23. 2026-08-27 14:24 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  24. 2026-08-26 14:45 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  25. 2026-08-25 13:48 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  26. 2026-08-24 14:16 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  27. 2026-08-24 09:22 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  28. 2026-08-23 00:18 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  29. 2026-08-21 23:48 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  30. 2026-08-20 22:54 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  31. 2026-08-19 17:03 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  32. 2026-08-18 13:47 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  33. 2026-08-17 13:46 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  34. 2026-08-16 14:55 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  35. 2026-08-16 02:13 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  36. 2026-08-15 01:29 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  37. 2026-08-13 21:59 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  38. 2026-08-12 13:50 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  39. 2026-08-12 05:47 UTCOSV refresh
  40. 2026-08-11 13:42 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  41. 2026-08-10 23:59 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  42. 2026-08-09 13:46 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  43. 2026-08-08 16:36 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  44. 2026-08-07 16:26 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  45. 2026-08-06 13:46 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  46. 2026-08-05 19:16 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  47. 2026-08-04 15:09 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  48. 2026-08-04 10:37 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  49. 2026-08-03 10:35 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  50. 2026-08-02 02:26 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  51. 2026-08-01 04:15 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  52. 2026-07-30 16:27 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  53. 2026-07-30 01:30 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  54. 2026-07-28 15:35 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  55. 2026-07-27 11:39 UTCOSV refresh
  56. 2026-07-26 14:54 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  57. 2026-07-25 14:17 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  58. 2026-07-24 14:17 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  59. 2026-07-23 14:18 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  60. 2026-07-23 02:59 UTCEG score recompute
  61. 2026-07-22 14:07 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  62. 2026-07-21 15:24 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  63. 2026-07-20 17:08 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  64. 2026-07-19 14:30 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  65. 2026-07-19 02:28 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  66. 2026-07-18 10:04 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  67. 2026-07-16 17:02 UTCEPSS rescoreEPSS 1.3% · 66th percentile
  68. 2026-07-15 16:57 UTCEPSS rescoreEPSS 1.3% · 66th percentile

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-59375?
CVE-2025-59375 is a high-severity vulnerability; its CVE record was published on September 15, 2025. libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
When was the CVE record for CVE-2025-59375 published?
The CVE record for CVE-2025-59375 was published on September 15, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 14, 2026; the record at its source may have been updated since.
Is CVE-2025-59375 actively exploited?
CVE-2025-59375 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.3% probability of exploitation in the next 30 days (69th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-59375?
CVE-2025-59375 has a CVSS base score of 7.5 (the CNA's own assessment, by mitre; NVD's own analysis pending).
How do I remediate CVE-2025-59375?
A fix for CVE-2025-59375 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-59375 are linked in the Vendor Advisories panel on this page.

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