CVE-2026-45185

01/תיאור (מקור, אנגלית)

Exim before 4.99.3, in certain GnuTLS configurations, has a remotely reachable use-after-free in the BDAT body parsing path. It is triggered when a client sends a TLS close_notify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to heap corruption. An unauthenticated network attacker exploiting this vulnerability could execute arbitrary code.

02/מוצרים מושפעים

exim: exim

03/קישורים8

• code.exim.org/exim/wiki/wiki/EximSecurity Vendor Advisory
• exim.org Product
• exim.org/static/doc/security/CVE-2026-45185.txt Broken Link
• exim.org/static/doc/security/EXIM-Security-2026-05-01.1/ Release Notes
• news.ycombinator.com/item?id=48111748 Issue Tracking
• www.openwall.com/lists/oss-security/2026/05/12/4 Mailing ListThird Party Advisory
• xbow.com/blog/dead-letter-cve-2026-45185-xbow-found-rce-exim Third Party Advisory
• www.openwall.com/lists/oss-security/2026/05/12/25 Mailing ListThird Party Advisory