NULL pointer deference in the addsn function in serialno.c in libbibcore.a in bibutils through 6.2 allows remote attackers to cause a denial of service (application crash), as demonstrated by copac2xml.
Conclusion & alert: CVE-2018-10773 is rated Moderate Risk (48.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.15%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 0.61% | 1.15% | +0.54% |
| 2 | 2025-11-21 | 0.36% | 0.61% | +0.25% |
| 3 | 2025-11-18 | — | 0.36% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.5 | 3.0 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2018-10773 unimportant priority: Debian including 1 source packages (bibutils), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2018-10773 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2018-10773 |
ubuntu
|
medium | CVE-2018-10773 medium priority: Ubuntu including 1 source packages (bibutils), 20 status rows across 20 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 12, needs-triage 7, DNE 1. | https://ubuntu.com/security/CVE-2018-10773 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| bibutils_project | bibutils | <= 6.2 | cpe:2.3:a:bibutils_project:bibutils:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://docs.google.com/document/d/1k598A16gV9HPwFXnYkyrPwoRbnbFX6LAMRyzb_dxLCM/edit | Third Party Advisory |