CVE-2021-45960
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 4.2%
exploitation probability
4.2%top 10% of all CVEs
observed exploitation
nono source reports it
In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
n/a · n/aReferences
https://bugzilla.mozilla.org/show_bug.cgi?id=1217609https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdfhttps://github.com/libexpat/libexpat/issues/531https://github.com/libexpat/libexpat/pull/534https://security.gentoo.org/glsa/202209-24https://security.netapp.com/advisory/ntap-20220121-0004/https://www.debian.org/security/2022/dsa-5073https://www.tenable.com/security/tns-2022-05http://www.openwall.com/lists/oss-security/2022/01/17/3