CVE-2025-15638

Name: CVE-2025-15638
Creator: NVD / NIST
Published: 2026-04-21T16:16:19.03+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 10/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2025-15638 is a critical-severity vulnerability rated 10/10 on the CVSS scale. Net::Dropbear versions before 0.14 for Perl contains a vulnerable version of libtomcrypt. Net::Dropbear versions before 0.14 includes versions of Dropbear 2019.78 or earlier. These include versions of libtomcrypt v1.18.1 or earlier, which is affected by CVE-2016-6129 and CVE-2018-12437.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

Net::Dropbear versions before 0.14 for Perl contains a vulnerable version of libtomcrypt. Net::Dropbear versions before 0.14 includes versions of Dropbear 2019.78 or earlier. These include versions of libtomcrypt v1.18.1 or earlier, which is affected by CVE-2016-6129 and CVE-2018-12437.

Metrics

CVSS 3.1

10/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

0.57%

42.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions	Update
Atrodo	Net\	< 0.14	Dropbear

References

https://metacpan.org/release/ATRODO/Net-Dropbear-0.14/source/dropbear/libtomcrypt/changesRelease Notes
https://www.cve.org/CVERecord?id=CVE-2016-6129Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2018-12437Third Party Advisory

Timeline

Published: Apr 21, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-15638?

How severe is CVE-2025-15638?

CVE-2025-15638 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2025-15638?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-15638?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST