z
zlib
Security Risk Profile
45
/100
mediumSecurity Risk Score
Comprehensive risk assessment based on 35 vulnerabilities, EPSS scores, exploitation status, and remediation availability.
📅 Data spans from March 15, 2002 to present
35
Total CVEs
17
Critical+High
0
Exploited
7
Unpatched
Threat Assessment
Avg CVSS
7.2
Base severity
Avg EPSS
0%
Exploit probability
Unpatched
7
Critical/High
Risk Level
45/100
medium
🆕 1Fresh (<7d)📈 2 in Last 30 Days
Severity Distribution
Critical
5High
12Medium
6Low
1Exploit Likelihood
>50% chance
020-50%
05-20%
0<5%
2Age Distribution
Common Weaknesses (CWE)
1
Buffer Overflow
11
2
Integer Overflow
4
3
Race Condition
3
4
Use After Free
2
5
Input Validation
2
Most Affected Products
1. zlib zlib48
2. alpine/zlib27
3. Ubuntu Ubuntu24
4. debian/zlib20
5. Nodejs Node.js20
Recent Vulnerabilities
See more →USN-8954-1
unknown
zlib vulnerability
Oct 22, 2026
CVE-2026-85091
CVSS 8.3high
zlib 1.3.1.2 through 1.3.2 Heap Buffer Overflow via gz_vacate
Sep 3, 2026
CVE-2026-18618
CVSS 7.5high
Ml-metdata: bundled grpc 1.46.3 (2022) with published http/2 dos cves — directly reachable on listener
Aug 3, 2026🔧 No Patch
REDHAT-BUG-2510313
CVSS 4.0medium
Aug 3, 2026🔧 No Patch
CVE-2026-27171
CVSS 5.5EPSS 0%medium
Feb 18, 2026
https://seclists.org/oss-sec/2026/q1/175
unknown
zlib security audit by 7asecurity
Feb 17, 2026🔧 No Patch
https://seclists.org/oss-sec/2026/q1/72
unknown
Fwd: [FD] zlib v1.3.1.2 Global Buffer Overflow in TGZfname() of zlib untgz Utility via Unbounded strcpy() on User-Supplied Archive Name
Jan 15, 2026🔧 No Patch
REDHAT-BUG-2427688
CVSS 7.0high
Jan 7, 2026🔧 No Patch
CVE-2026-22184
CVSS 4.6EPSS 0%medium
zlib <= 1.3.1.2 untgz Global Buffer Overflow in TGZfname()
Jan 7, 2026🔧 No Patch
https://reddit.com/r/sysadmin/comments/1nok0ze/questions_about_trivy_for_container_image_scans/
unknown
Questions about Trivy for container image scans
Sep 23, 2025🔧 No Patch
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