A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the environment and library usage.
Fix
Public exploits 1
- uthrasri/Expat_2.6.2_CVE-2024-8176 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Vendor advisories in the News 1
- Hitachi Energy REB500 CISA ICS Advisories · 2026-10-06
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
In the news 1
- Hitachi Energy REB500 CISA advisories and alerts · 2026-10-06
Change history 1
- First seenCVSS 7.5NVD modified 2026-10-15 01:19
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 41
- https://access.redhat.com/errata/RHSA-2025:13681
- https://access.redhat.com/errata/RHSA-2025:22033
- https://access.redhat.com/errata/RHSA-2025:22034
- https://access.redhat.com/errata/RHSA-2025:22035
- https://access.redhat.com/errata/RHSA-2025:22607
- https://access.redhat.com/errata/RHSA-2025:22785
- https://access.redhat.com/errata/RHSA-2025:22842
- https://access.redhat.com/errata/RHSA-2025:22871
- https://access.redhat.com/errata/RHSA-2025:3531
- https://access.redhat.com/errata/RHSA-2025:3734
- https://access.redhat.com/errata/RHSA-2025:3913
- https://access.redhat.com/errata/RHSA-2025:4048
- https://access.redhat.com/errata/RHSA-2025:4446
- https://access.redhat.com/errata/RHSA-2025:4447
- https://access.redhat.com/errata/RHSA-2025:4448
- https://access.redhat.com/errata/RHSA-2025:4449
- https://access.redhat.com/errata/RHSA-2025:7444
- https://access.redhat.com/errata/RHSA-2025:7512
- https://access.redhat.com/errata/RHSA-2025:8385
- https://access.redhat.com/security/cve/CVE-2024-8176
- https://bugzilla.redhat.com/show_bug.cgi?id=2310137
- https://github.com/libexpat/libexpat/issues/893
- https://github.com/libexpat/libexpat/pull/973
- http://seclists.org/fulldisclosure/2025/May/10
- http://seclists.org/fulldisclosure/2025/May/11
- http://seclists.org/fulldisclosure/2025/May/12
- http://seclists.org/fulldisclosure/2025/May/6
- http://seclists.org/fulldisclosure/2025/May/7
- http://seclists.org/fulldisclosure/2025/May/8
- http://www.openwall.com/lists/oss-security/2025/03/15/1
- http://www.openwall.com/lists/oss-security/2025/09/24/11
- https://blog.hartwork.org/posts/expat-2-7-0-released/
- https://bugzilla.suse.com/show_bug.cgi?id=1239618
- https://github.com/libexpat/libexpat/blob/R_2_7_0/expat/Changes#L40-L52
- https://gitlab.alpinelinux.org/alpine/aports/-/commit/d068c3ff36fc6f4789988a09c69b434db757db53
- https://security-tracker.debian.org/tracker/CVE-2024-8176
- https://security.netapp.com/advisory/ntap-20250328-0009/
- https://ubuntu.com/security/CVE-2024-8176
- https://www.kb.cert.org/vuls/id/760160
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html