CVE-2022-22822
9.8
CRITICAL · CVSS 3.1 · EPSS 4.8% (pctl 92)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.83% — more likely to be exploited than 92% of all CVEs |
| Weakness | CWE-190 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2022-01-10 |
| Last modified | 2026-06-17 |
Affected (4)
| Vendor | Product |
|---|---|
| debian | debian linux |
| libexpat project | libexpat |
| siemens | sinema remote connect server |
| tenable | nessus |
References
- http://www.openwall.com/lists/oss-security/2022/01/17/3
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- https://github.com/libexpat/libexpat/pull/539
- https://security.gentoo.org/glsa/202209-24
- https://www.debian.org/security/2022/dsa-5073
- https://www.tenable.com/security/tns-2022-05
- http://www.openwall.com/lists/oss-security/2022/01/17/3
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- https://github.com/libexpat/libexpat/pull/539
- https://security.gentoo.org/glsa/202209-24
- https://www.debian.org/security/2022/dsa-5073
- https://www.tenable.com/security/tns-2022-05
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