Buffer overflow in Kerberos 4 KDC program allows remote attackers to cause a denial of…
Priority LOW 28CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
Buffer overflow in Kerberos 4 KDC program allows remote attackers to cause a denial of service via the lastrealm variable in the set_tgtkey function.
Why it matters now
EPSS 0.02894 87th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cygnus_network_security_project:cygnus_network_security:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cygnus Network Security Project |
| cpe:2.3:a:kerbnet_project:kerbnet:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Kerbnet Project |
| cpe:2.3:a:mit:kerberos:*:*:*:*:*:*:*:* | before 4.0 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos:4.0:-:*:*:*:*:*:* | 4.0 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos:4.0:patch10:*:*:*:*:*:* | 4.0 patch10 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* | 1.0 – 1.0.7 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.1:*:*:*:*:*:*:* | 1.1 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.1.1:*:*:*:*:*:*:* | 1.1.1 | Vulnerable | moos-ivp |
- cpe:2.3:a:cygnus_network_security_project:cygnus_network_security:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cygnus Network Security Project
- cpe:2.3:a:kerbnet_project:kerbnet:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Kerbnet Project
- cpe:2.3:a:mit:kerberos:*:*:*:*:*:*:*:* Versions before 4.0 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos:4.0:-:*:*:*:*:*:* Versions 4.0 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos:4.0:patch10:*:*:*:*:*:* Versions 4.0 patch10 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* Versions 1.0 – 1.0.7 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.1:*:*:*:*:*:*:* Versions 1.1 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.1.1:*:*:*:*:*:*:* Versions 1.1.1 Vulnerable ·moos-ivp
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2000-0546
- 2026-10-03 Alias added: GHSA-2wm7-6r5c-mjpc
References
Sources
- CVE-2000-0546 · CVE Program
- CVE-2000-0546 · NVD
- FIRST EPSS
- GHSA-2wm7-6r5c-mjpc · GitHub Advisory Database · CC BY 4.0
- CVE-2000-0546 · Red Hat security data · CC BY 4.0
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