seeko.c in zziplib 0.13.62 allows remote attackers to cause a denial of service (assertion failure and crash) via a crafted ZIP file.
Conclusion & alert: CVE-2017-5981 is rated High Exploit Risk (64/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.62%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.50% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.12% | 1.62% | +1.50% |
| 2 | 2026-05-17 | 0.43% | 0.12% | -0.31% |
| 3 | 2025-11-21 | — | 0.43% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.5 | 3.0 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2017-5981 not yet assigned priority: Debian including 1 source packages (zziplib), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2017-5981 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2017-5981 |
ubuntu
|
medium | CVE-2017-5981 medium priority: Ubuntu including 1 source packages (zziplib), 6 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): released 4, ignored 1, needs-triage 1. | https://ubuntu.com/security/CVE-2017-5981 |
| URL | Tags |
|---|---|
| http://www.debian.org/security/2017/dsa-3878 | |
| http://www.securityfocus.com/bid/96268 | |
| https://blogs.gentoo.org/ago/2017/02/09/zziplib-assertion-failure-in-seeko-c/ | Exploit Third Party Advisory |