LOW 2.9 Microsoft
CVE-2025-66382
In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.
Microsoft Security Update 2025-Nov: In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.
Affected Products
- azl3 expat 2.6.4-2 on Azure Linux 3.0
- cbl2 expat 2.6.4-3 on CBL Mariner 2.0
- cbl2 expat 2.6.4-4 on CBL Mariner 2.0
- cbl2 expat 2.6.4-2 on CBL Mariner 2.0
- azl3 expat 2.6.4-4 on Azure Linux 3.0
- azl3 expat 2.6.4-5 on Azure Linux 3.0
- azl3 expat 2.6.4-6 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-66382
- https://nvd.nist.gov/vuln/detail/CVE-2025-66382
This low severity vulnerability with a CVSS score of 2.9 was published on 2025-11-11 via Microsoft. Affected: azl3 expat 2.6.4-2 on Azure Linux 3.0, cbl2 expat 2.6.4-3 on CBL Mariner 2.0, cbl2 expat 2.6.4-4 on CBL Mariner 2.0 and 4 more.
vulnfeed aggregates 11940 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.