Skip to content
Fencer Intel
medium 6.5

CVE-2025-40913 json

Net::Dropbear versions through 0.16 for Perl contains a dependency that may be susceptible to an integer overflow

published last yr. modified 4mo ago also EUVD-2025-21701

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

Net::Dropbear versions through 0.16 for Perl contains a dependency that may be susceptible to an integer overflow.

Net::Dropbear embeds a version of the libtommath library that is susceptible to an integer overflow associated with CVE-2023-36328.

Patch / fix

  • tcl Azure Linux 3.0 8.6.13-2

azure linux advisories AZL-65571

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Is CVE-2025-40913 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

  • ATRODO Net::Dropbear

Classification

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

References

Sources

Fencer Intel 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.