CVE-2026-7598

Name: CVE-2026-7598
Creator: NVD / NIST
Published: 2026-05-01T22:16:16.947+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2026-7598 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.

Metrics

CVSS 3.1

7.3/10

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

CVSS 4.0

6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.36%

27.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Libssh2	Libssh2	<= 1.11.1

References

https://github.com/libssh2/libssh2/Product
https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1Patch
https://github.com/libssh2/libssh2/pull/1858Issue Tracking
https://vuldb.com/submit/805564Third Party Advisory, VDB Entry
https://vuldb.com/vuln/360555Third Party Advisory, VDB Entry
https://vuldb.com/vuln/360555/ctiPermissions Required, VDB Entry
https://vuldb.com/submit/805564Third Party Advisory, VDB Entry

Timeline

Published: May 1, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-7598?

How severe is CVE-2026-7598?

CVE-2026-7598 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2026-7598?

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-2026-7598?

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

Scan your code now

Source: NVD / NIST