CVE-2022-23852
CRITICAL 9.8EPSS 5.1%
Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P - EPSS
- 5.08% chance of exploitation in the next 30 days, 92nd percentile
- Published
- 2022-01-24
- Updated
- 2026-10-14
Proof-of-concept exploits (1)
- Satheesh575555/external_expat_AOSP10_r33_CVE-2022-238520★ · 2022-05-10
Security advisories
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- libexpat/libexpat/pull/550
- https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html
- https://security.gentoo.org/glsa/202209-24
- https://security.netapp.com/advisory/ntap-20220217-0001
- https://www.debian.org/security/2022/dsa-5073
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.tenable.com/security/tns-2022-05