CVE-2022-22827
HIGHCVSS 8.8/10EPSS 2.78%
Last modified
CVE-2022-22827 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.. EPSS estimates a 2.78% chance of exploitation in the next 30 days.
Description
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libexpat Project | Libexpat | < 2.4.3 |
| Tenable | Nessus | < 8.15.3 |
| Tenable | Nessus | >= 10.0.0, < 10.1.1 |
| Debian | Debian Linux | 10.0 |
| Debian | Debian Linux | 11.0 |
| Siemens | Sinema Remote Connect Server | < 3.1 |
References
- http://www.openwall.com/lists/oss-security/2022/01/17/3Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdfThird Party Advisory
- https://github.com/libexpat/libexpat/pull/539Third Party Advisory
- https://security.gentoo.org/glsa/202209-24Third Party Advisory
- https://www.debian.org/security/2022/dsa-5073Third Party Advisory
- https://www.tenable.com/security/tns-2022-05Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/01/17/3Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdfThird Party Advisory
- https://github.com/libexpat/libexpat/pull/539Third Party Advisory
- https://security.gentoo.org/glsa/202209-24Third Party Advisory
- https://www.debian.org/security/2022/dsa-5073Third Party Advisory
- https://www.tenable.com/security/tns-2022-05Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-22827?
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
How severe is CVE-2022-22827?
CVE-2022-22827 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.78% probability of exploitation in the next 30 days.
How do I fix CVE-2022-22827?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2022-22827?
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Scan your code nowSource: NVD / NIST