HOMEVULNERABILITIESCVE-2026-7598
HIGH

CVE-2026-7598

CWE-189Published: May 1, 2026· Updated: May 7, 2026

7.3
CVSS v3.1
EPSS:0.05%probability of exploitation in 30 daysPercentile:14.1th

Official 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.

NVD Source

Technical Analysis

CVE-2026-7598 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected Vendors & Products

libssh21 product
libssh2
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1
ADVISORYhttps://vuldb.com/submit/805564
ADVISORYhttps://vuldb.com/vuln/360555
ADVISORYhttps://vuldb.com/submit/805564

All References (7)

→
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

Quick Facts

CVE IDCVE-2026-7598
CVSS Score7.3 / 10
SeverityHIGH
WeaknessCWE-189
CISA KEVNo
EPSS (30d)0.05%
Affected1 vendor
PublishedMay 1, 2026

Related CVEs (CWE-189)

CVE-2026-7736
7.5
CVE-2026-3284
5.5
CVE-2026-3707
5.3
CVE-2026-5476
4.6
CVE-2026-4985
4.3
CVE-2026-8275
3.7

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-7598 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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