L

Libssh2

Open Source www.libssh2.org ↗
D
RISKY
5
Total CVEs
2
Crit / High
1
Medium
0%
Unpatched
100%
Patched
6.9
Avg CVSS
0
CISA KEV
// Data sourced from NVD · CISA KEV · RHSA · GHSA · Debian · OSV · EPSS · Exploit-DB How we collect data →
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▸ CVE Trend by Year
▸ Patch Coverage
Patched
100%
Unpatched
0%
✓ 5 patched ✗ 0 unpatched
▸ Intelligence by Audience
PoC Available
0 / 20 shown
CISA KEV (Exploited)
0
Shodan Dorks
ssl:"libssh2" port:443
org:"Libssh2" http.status:200
Top EPSS (Exploitation Probability)
CVE-2026-66033 0.69% exploitation probability
CVE-2025-15661 0.65% exploitation probability
CVE-2026-66035 0.55% exploitation probability
CVE-2026-66032 0.45% exploitation probability
CVE-2026-66034 0.40% exploitation probability
Quick Facts for Reporting
Total CVEs tracked
5
Critical severity
0
Actively exploited (CISA)
0
Unpatched ratio
0%
Avg CVSS score
6.9
Security grade
D (RISKY)
NVD Data Attribution
Source: NIST National Vulnerability Database (NVD) + GitHub Advisory Database.
Data aggregated by Valters IT Hub · valtersit.com
Last updated: 2026-07-11
Security Risk Score (for investors)
LOW
Vuln Volume
GOOD
Patch Responsiveness
LOW
CISA Exposure
⚠ Not financial advice. Past security incidents do not guarantee future stock performance.
▸ Security News Google News
libssh2 Vulnerabilities Allow a Malicious SSH Server to Corrupt Client Memory - CyberSecurityNews
CyberSecurityNews 2026-07-28
Critical libssh2 Vulnerability Allows Attackers to Execute Remote Code Via Malicious SSH packets - CyberSecurityNews
CyberSecurityNews 2026-06-23
CVE-2026-55200: Critical libssh2 Client-Side SSH Vulnerability Exposes Curl, Git, PHP to Remote Code Execution Risk - Rescana
Rescana 2026-06-30
PoC Exploit Released for libssh2 Remote Code Execution Vulnerability - CyberSecurityNews
CyberSecurityNews 2026-06-24
Public PoC Released for Critical libssh2 CVE-2026-55200 Client-Side SSH Flaw - The Hacker News
The Hacker News 2026-06-29
Researcher Behind 'Exploitarium' Explains Release of Undisclosed Zero-Day Exploits - Infosecurity Magazine
Infosecurity Magazine 2026-07-02
▸ Recent CVEs showing 20 of 5
CVE IDSeverityPatchEPSSDate
CVE-2026-66035 7.5 HIGH PATCHED / FIX AVAILABLE 0.55% 2026-07-24
CVE-2026-66034 7.5 HIGH PATCHED / FIX AVAILABLE 0.40% 2026-07-24
CVE-2026-66033 7.5 HIGH PATCHED / FIX AVAILABLE 0.69% 2026-07-24
CVE-2026-66032 8.8 HIGH PATCHED / FIX AVAILABLE 0.45% 2026-07-24
CVE-2025-15661 8.3 HIGH PATCHED / FIX AVAILABLE 0.65% 2026-06-18
View all 5 CVEs for Libssh2 →
▸Intel
LicenseOpen Source
Trust ScoreD — RISKY
Max CVSS7.3
Last Updated2026-07-11
▸Top Weaknesses
CWE-190
Integer Overflow
2 occurrences in Libssh2 CVEs (40% of total)
CWE-190 ⓘ
2
CWE-908
Unknown Weakness Type
1 occurrence in Libssh2 CVEs (20% of total)
CWE-908 ⓘ
1
CWE-122
Heap-Based Buffer Overflow
1 occurrence in Libssh2 CVEs (20% of total)
CWE-122 ⓘ
1
CWE-835
Unknown Weakness Type
1 occurrence in Libssh2 CVEs (20% of total)
CWE-835 ⓘ
1
▸Company Profile

Libssh2 is an open-source library implementing the SSH2 protocol for secure client-server communications. It is widely used as a dependency in various software products and operating systems, making its security vulnerabilities significant for the broader software ecosystem.

▸Response Metrics
Est. MTTR ⓘ ~45 days (Good)
Mean Time To Remediate. Estimates days from CVE disclosure to patch.
Industry avg: ~60d (good) · 100-300d (poor) · 300d+ (critical)
Patch Speed ⓘ Poor (>65% open)
0% of CVEs still unpatched.  Excellent: <20% · Good: 20-40% · Avg: 40-65% · Poor: >65%
▸ Financial Risk Estimate
Est. GDPR Low
€600K
Est. GDPR High
€6.0M

Based on 0 critical CVEs, 0 CISA KEV, 100% unpatched. Model: GDPR Art.83 · not legal advice.

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