Skip to content
Fencer Vulns
critical 9.8

CVE-2025-40912 json

CryptX for Perl before version 0.065 contains a dependency that may be susceptible to malformed unicode

published 2025-06-11 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-18140

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

CryptX for Perl before version 0.065 contains a dependency that may be susceptible to malformed unicode.

CryptX embeds the tomcrypt library. The versions of that library in CryptX before 0.065 may be susceptible to CVE-2019-17362.

Patch / fix

  • MIK CryptX 0.065
  • libcryptx-perl Debian 14, Debian 13, Debian 12 0.066-1

debian advisories DEBIAN-CVE-2025-40912

  • libcryptx-perl Ubuntu Pro 18.04 LTS 0.056-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2025-40912

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-40912 updated cvss 5.3

cryptx: CryptX for Perl denial of service vector

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
16 mo ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • MIK CryptX

Classification

Weakness
  • CWE-1395 Dependency on Vulnerable Third-Party Component

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.