CVE-2025-67897

In Sequoia before 2.1.0, aes_key_unwrap panics if passed a ciphertext that is too short. A remote attacker can take advantage of this issue to crash an application by sending a victim an encrypted message with a crafted PKESK or SKESK packet.

Published: 2025-12-14 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-67897 is rated Low Risk (34.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.17%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-67897

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-24 0.15% 0.17% +0.02%
2 2026-05-12 0.28% 0.15% -0.13%
3 2026-04-15 — 0.28% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-67897

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.6 3.6 [email protected]

Weakness enumeration for CVE-2025-67897

GitHub Security Advisory for CVE-2025-67897

GHSA-v6x3-9r38-r27q · Severity: medium · Ecosystem: rust — Sequoia PGP has Subtraction Overflow when aes_key_unwrap function is provided ciphertext that is too short

OS Trackers for CVE-2025-67897

vendor priority summary link
debian not yet assigned CVE-2025-67897 not yet assigned priority: Debian including 1 source packages (rust-sequoia-openpgp), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2025-67897
redhat medium — https://access.redhat.com/security/cve/CVE-2025-67897
ubuntu medium CVE-2025-67897 medium priority: Ubuntu including 1 source packages (rust-sequoia-openpgp), 5 status rows across 5 suites (jammy, noble, plucky, questing, upstream): needs-triage 3, ignored 1, released 1. https://ubuntu.com/security/CVE-2025-67897

Affected software / configurations for CVE-2025-67897

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-67897

cvelogic Threat Intelligence