CVE-2025-49795

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2025-06-16. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

June 16, 2025

Last Modified

July 7, 2026

Advisory Details (7)

Auto-updated Jun 25, 2026
Patch available. Sources: redhat.
generic

SSA-253495

https://cert-portal.siemens.com/productcert/html/ssa-253495.html
generic

(CVE-2025-49795) Null pointer dereference leads to Denial of service (DoS) (#932) · Issues · GNOME / libxml2 · GitLab

https://gitlab.gnome.org/GNOME/libxml2/-/issues/932
redhat Patch Available

2372379 – (CVE-2025-49795) CVE-2025-49795 libxml: Null pointer dereference leads to Denial of service (DoS)

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2372379
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2025-49795
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:7519
redhat Patch Available
https://access.redhat.com/errata/RHSA-2025:19020
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

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

Vendor Advisories for CVE-2025-49795(4)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatlibxml2-main-2.15.2-0.3.hum12026-04-10redhat
redhatlibxml22025-10-27redhat
redhatlibxml2-0:2.12.5-7.el10_02025-07-08redhat
debian:12libxml2—osv
debian:13libxml2—osv

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

(4 across 4 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.13.9-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.13.9-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.13.9-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.13.9-r0—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 6× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 176 total refreshes for this CVE.

  1. 2026-09-04 05:06 UTCEPSS rescore
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  7. 2026-08-29 00:13 UTCOSV refresh
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  25. 2026-08-12 11:40 UTCOSV refresh
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  1. 2026-08-11 13:41 UTCEPSS rescore
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  22. 2026-07-23 02:57 UTCEG score recompute
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  44. 2026-07-10 11:28 UTCOSV refresh
  45. 2026-07-09 19:09 UTCEPSS rescore
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  74. 2026-06-21 21:12 UTCOSV refresh
  75. 2026-06-21 14:56 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-49795?
CVE-2025-49795 is a high vulnerability published on June 16, 2025. A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service.
When was CVE-2025-49795 disclosed?
CVE-2025-49795 was first published in the National Vulnerability Database on June 16, 2025, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-49795 actively exploited?
CVE-2025-49795 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.8% of all scored CVEs.
What is the CVSS score of CVE-2025-49795?
CVE-2025-49795 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-49795?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-49795, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-49795

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