Critical severity9.8NVD Advisory· Published Nov 25, 2017· Updated May 13, 2026
CVE-2017-16943
CVE-2017-16943
Description
The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDAT commands.
Affected products
3- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
10- git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bdenvdPatch
- bugs.exim.org/show_bug.cginvdExploitIssue Tracking
- github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944nvdExploit
- www.securitytracker.com/id/1039872nvdThird Party AdvisoryVDB Entry
- www.debian.org/security/2017/dsa-4053nvdThird Party Advisory
- openwall.com/lists/oss-security/2017/11/25/1nvdMailing List
- openwall.com/lists/oss-security/2017/11/25/2nvdMailing List
- openwall.com/lists/oss-security/2017/11/25/3nvdMailing List
- lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.htmlnvdMailing List
- www.openwall.com/lists/oss-security/2021/05/04/7nvd
News mentions
1- New Exim BDAT Vulnerability Exposes GnuTLS Builds to Potential Code ExecutionThe Hacker News · May 12, 2026