Skip to main content

Boteraser | Website and Server Security Solutions

🛡️ CVE-2025-67897 — sequoia-openpgp

🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-195 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Underflow in aes_key_unwrap function

The aes_key_unwrap function would panic if passed a ciphertext

that was too short. In a debug build, it would panic due to a

subtraction underflow. In a release build, it would use the

small negative quantity to allocate a vector. Since the

allocator expects an unsigned quantity, the negative value would

be interpreted as a huge allocation. The allocator would then

fail to allocate the memory and panic.

An attacker could trigger this panic by sending a victim an

encrypted message whose PKESK or SKESK packet has been specially

modified. When the victim decrypts the message, the program

would crash.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2025-67897 is classified as CWE-195: Signed to Unsigned Conversion Error. The product uses a signed primitive and performs a cast to an unsigned primitive, which can produce an unexpected value if the value of the signed primitive can not be represented using an unsigned primitive.

Affected software

CVE-2025-67897 is recorded against 2 packages.

  • sequoia-openpgp
  • unknown

Timeline and source

Published on 14 December 2025 and last revised on 4 February 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
bugs.debian.org (Web)
gitlab.com (Package)
gitlab.com (Web)
gitlab.com (Web)
rustsec.org (Web)

Other advisories for this package

sequoia-openpgp 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-195: Signed to Unsigned Conversion Error) in other software:

CVE-2025-67897 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE CWE-195
Public Exploit ✅ No
Source NVD
Published 2025-12-14
Updated 2026-08-20
Modified 2026-02-04
Fix URL N/A

Affected Packages

Software From version Fixed in
sequoia-openpgp — —
unknown — —

Vulnerability Monitoring

Track new vulnerabilities in sequoia-openpgp

CVE-2025-67897 is rated CVSS 5.3 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.

Set Up Free Alerts →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2025
✓