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.
CVE-2024-8176
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2025-03-14. NVD baseline CVSS 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- —
- EPSS
- 72.8%
- KEV
- Not listed
Published
March 14, 2025
Last Modified
June 30, 2026
Advisory Details (10)
Auto-updated Jun 25, 2026Affected: Red Hat Enterprise Linux 9.
https://access.redhat.com/errata/RHSA-2025:3531Affected: Red Hat Enterprise Linux 8.2 Advanced Update Support.
https://access.redhat.com/errata/RHSA-2025:22871Affected: 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-2025:22842Affected: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support
https://access.redhat.com/errata/RHSA-2025:22785Affected: 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-2025:22607Affected: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.
https://access.redhat.com/errata/RHSA-2025:22035Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.
https://access.redhat.com/errata/RHSA-2025:22034Affected: Red Hat Enterprise Linux 9.4 Extended Update Support.
https://access.redhat.com/errata/RHSA-2025:22033Vendor Advisories for CVE-2024-8176(20)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- CVE-2024-8176Microsoft Security Response Center (MSRC)High
Libexpat: expat: improper restriction of xml entity expansion depth in libexpat
- RHSA-2025:22871Red Hat Product SecurityHigh
Red Hat Security Advisory: expat security update
- RHSA-2025:22842Red Hat Product SecurityHigh
Red Hat Security Advisory: expat security update
- RHSA-2025:22785Red Hat Product SecurityHigh
Red Hat Security Advisory: expat security update
- RHSA-2025:22607Red Hat Product SecurityHigh
Red Hat Security Advisory: expat security update
- RHSA-2025:22033Red Hat Product SecurityHigh
Red Hat Security Advisory: expat security update
- RHSA-2025:22034Red Hat Product SecurityHigh
Red Hat Security Advisory: expat security update
- RHSA-2025:22035Red Hat Product SecurityHigh
Red Hat Security Advisory: expat security update
- +12 more
Patch Availability(20)
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.
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 11× in last 7d / 45× 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 114 total refreshes for this CVE.
- 2026-07-22 14:07 UTCEPSS rescore
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- 2026-06-03 16:09 UTCOSV refresh
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Frequently asked(5)
What is CVE-2024-8176?
When was CVE-2024-8176 disclosed?
Is CVE-2024-8176 actively exploited?
What is the CVSS score of CVE-2024-8176?
How do I remediate CVE-2024-8176?
Dependency Blast Radius
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