CVE-2025-7425 | Libxslt: libxml2: heap use-after-free in libxslt caused by atype corruption in xmlattrptr

A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that corrupts internal memory management. When XSLT functions, such as the key() process, result in tree fragments, this corruption prevents the proper cleanup of ID attributes. As a result, the system may access freed memory, causing crashes or enabling attackers to trigger heap corruption.

Published: 2025-07-10 Last update: 2026-05-12 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2025-7425 is rated Moderate Risk (45.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.19%). Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-7425

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-06 0.05% 0.19% +0.14%
2 2026-03-26 0.01% 0.05% +0.04%
3 2025-07-11 0.01%

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-7425

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
1.4 5.8 [email protected]

Weakness enumeration for CVE-2025-7425

GitHub Security Advisory for CVE-2025-7425

GHSA-8c4w-j52q-j4jq · Severity: high — A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that...

OS Trackers for CVE-2025-7425

vendor priority summary link
debian unimportant CVE-2025-7425 unimportant priority: Debian including 1 source packages (libxslt), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2025-7425
redhat high https://access.redhat.com/security/cve/CVE-2025-7425
suse high CVE-2025-7425 severity important: SUSE including 347 source package names (0.23.1-11.43:libxml2-2-2.10.3-150500.5.32.1, 0.3.2-1.2:libxml2-2-2.10.3-150500.5.32.1, …), 1114 product×package rows across 384 product lines (Container bci/kiwi, Container bci/spack, … (384 product lines)): Fixed 760, Known Affected 226, Known Not Affected 128. https://www.suse.com/security/cve/CVE-2025-7425/
ubuntu medium CVE-2025-7425 medium priority: Ubuntu including 2 source packages (libxml2, libxslt), 19 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): released 8, not-affected 6, deferred 3, ignored 2. https://ubuntu.com/security/CVE-2025-7425

Affected software / configurations for CVE-2025-7425

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-7425

URL Tags
https://access.redhat.com/errata/RHBA-2025:12345
https://access.redhat.com/errata/RHSA-2025:12447
https://access.redhat.com/errata/RHSA-2025:12450
https://access.redhat.com/errata/RHSA-2025:13267
https://access.redhat.com/errata/RHSA-2025:13308
https://access.redhat.com/errata/RHSA-2025:13309
https://access.redhat.com/errata/RHSA-2025:13310
https://access.redhat.com/errata/RHSA-2025:13311
https://access.redhat.com/errata/RHSA-2025:13312
https://access.redhat.com/errata/RHSA-2025:13313
https://access.redhat.com/errata/RHSA-2025:13314
https://access.redhat.com/errata/RHSA-2025:13335
https://access.redhat.com/errata/RHSA-2025:13464
https://access.redhat.com/errata/RHSA-2025:13622
https://access.redhat.com/errata/RHSA-2025:14059
https://access.redhat.com/errata/RHSA-2025:14396
https://access.redhat.com/errata/RHSA-2025:14818
https://access.redhat.com/errata/RHSA-2025:14819
https://access.redhat.com/errata/RHSA-2025:14853
https://access.redhat.com/errata/RHSA-2025:14858
https://access.redhat.com/errata/RHSA-2025:15308
https://access.redhat.com/errata/RHSA-2025:15672
https://access.redhat.com/errata/RHSA-2025:15827
https://access.redhat.com/errata/RHSA-2025:15828
https://access.redhat.com/errata/RHSA-2025:18219
https://access.redhat.com/errata/RHSA-2025:21885
https://access.redhat.com/errata/RHSA-2025:21913
https://access.redhat.com/errata/RHSA-2026:0934
https://access.redhat.com/errata/RHSA-2026:11503
https://access.redhat.com/security/cve/CVE-2025-7425
https://bugzilla.redhat.com/show_bug.cgi?id=2379274
https://gitlab.gnome.org/GNOME/libxslt/-/issues/140
http://seclists.org/fulldisclosure/2025/Aug/0
http://seclists.org/fulldisclosure/2025/Jul/30
http://seclists.org/fulldisclosure/2025/Jul/32
http://seclists.org/fulldisclosure/2025/Jul/35
http://seclists.org/fulldisclosure/2025/Jul/37
http://www.openwall.com/lists/oss-security/2025/07/11/2
https://lists.debian.org/debian-lts-announce/2025/09/msg00035.html
https://cert-portal.siemens.com/productcert/html/ssa-032379.html
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
https://cert-portal.siemens.com/productcert/html/ssa-577017.html
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