CVE-2026-7598

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.46% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 40.0% of scored records. A rank, not a probability.

NVD base score

6.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-09-01.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-05-01 21:30Z6 MO AGO

Last updated

2026-09-01 12:04Z1 MO AGO

Reserved

2026-05-01

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

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

Weaknesses

• CWE-189
• CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

628fa785bca7c0cc4e757508f33f94859a58f2d70314a2ee0525a1e64a08768f

• vuldb.comVDB-360555 | libssh2 userauth.c userauth_password integer overflowhttps://vuldb.com/vuln/360555vdb-entrytechnical-description
• vuldb.comVDB-360555 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/360555/ctisignaturepermissions-required
• vuldb.comSubmit #805564 | libssh2 <= 1.11.1 Integer Overflowhttps://vuldb.com/submit/805564third-party-advisory
• github.comhttps://github.com/libssh2/libssh2/pull/1858issue-trackingpatch
• github.comhttps://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1patch
• github.comhttps://github.com/libssh2/libssh2/product
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-7598vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2464597https://bugzilla.redhat.com/show_bug.cgi?id=2464597issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7598.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:61752vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:7021vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:16736vendor-advisoryx_refsource_REDHAT