Nixpkgs security tracker
NIXPKGS-2026-1548
GitHub issue
published on
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CVE-2026-45185
9.8 CRITICAL
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): High (H)
- Modified Availability (MA): High (H)
by @LeSuisse Activity log
- Created suggestion
-
@LeSuisse
ignored
2 references
- @LeSuisse accepted
- @LeSuisse published on GitHub
Exim before 4.99.3, in certain GnuTLS configurations, has a remotely …
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.
References
Ignored references (2)
Affected products
Exim
- <4.99.3
Package maintainers
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@dasJ Janne Heß <janne@hess.ooo>
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@helsinki-Jo Joachim Ernst <joachim.ernst@helsinki-systems.de>
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@4z3 Tomislav Viljetić <tv@krebsco.de>