Distribution advisory
This page covers CVE-2026-9641 as tracked by Debian, for the package libcrypt-pbkdf2-perl. The fix is available in version 0.261630-1; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Attack vector: Network — reachable from anywhere that can route to the service.
- Attack complexity: Low — the attack works reliably, with no preparation.
- Privileges required: None — an unauthenticated stranger can try it.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
- Integrity impact: None.
- Availability impact: None.
Weakness class
DEBIAN-CVE-2026-9641 is classified as CWE-916: Use of Password Hash With Insufficient Computational Effort. Passwords are hashed with a function fast enough to make large-scale guessing practical.
Affected software
DEBIAN-CVE-2026-9641 is recorded against 1 package.
- libcrypt-pbkdf2-perl (fixed in 0.261630-1)
Timeline and source
Published on 12 June 2026 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
security-tracker.debian.org (Advisory)
Other advisories for this package
libcrypt-pbkdf2-perl has other advisories on record. If you are patching this one, these are worth checking on the same host:
Same weakness in other software
These advisories are the same class of weakness (CWE-916: Use of Password Hash With Insufficient Computational Effort) in other software:
