CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NCVE-2020-12783
High (7.5). EPSS 4.6% chance of exploitation in the next 30 days.
Exim through 4.93 has an out-of-bounds read in the SPA authenticator that could result in SPA/NTLM authentication bypass in auths/spa.c and auths/auth-spa.c.
Severity
- EPSS
- 4.6% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
- CWE
- CWE-125
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- debian:debian_linux
- exim:exim
- fedoraproject:fedora
References
- http://www.openwall.com/lists/oss-security/2021/05/04/7
- https://bugs.exim.org/show_bug.cgi?id=2571
- https://git.exim.org/exim.git/commit/57aa14b216432be381b6295c312065b2fd034f86
- https://git.exim.org/exim.git/commit/a04174dc2a84ae1008c23b6a7109e7fa3fb7b8b0
- https://lists.debian.org/debian-lts-announce/2020/05/msg00017.html