CVE-2022-22827

storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CVSS v3.1 NVD

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS

2.96% chance of exploitation in the next 30 days, 87th percentile

Published

2022-01-08

Updated

2026-10-14

Proof-of-concept exploits (1)

• nanopathi/external_expat_AOSP10_r33_CVE-2022-22822toCVE-2022-228270★ · 2023-07-20

Security advisories

• http://www.openwall.com/lists/oss-security/2022/01/17/3
• https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
• 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

References

• CVE Record
• NVD entry

Related

• CVE-2020-0160
• CVE-2020-0183
• CVE-2020-0225
• CVE-2020-0241
• CVE-2020-0409
• CVE-2020-0421