Off-by-one buffer overflow in Dnsmasq before 2.21 may allow attackers to execute arbitrary code via the DHCP lease file.
Priority LOW 28Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Off-by-one buffer overflow in Dnsmasq before 2.21 may allow attackers to execute arbitrary code via the DHCP lease file.
Why it matters now
EPSS 0.02605 85th 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 · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:dnsmasq:dnsmasq:2.14:*:*:*:*:*:*:* | 2.14 | Vulnerable | dnsmasq |
| cpe:2.3:a:dnsmasq:dnsmasq:2.15:*:*:*:*:*:*:* | 2.15 | Vulnerable | dnsmasq |
| cpe:2.3:a:dnsmasq:dnsmasq:2.16:*:*:*:*:*:*:* | 2.16 | Vulnerable | dnsmasq |
| cpe:2.3:a:dnsmasq:dnsmasq:2.17:*:*:*:*:*:*:* | 2.17 | Vulnerable | dnsmasq |
| cpe:2.3:a:dnsmasq:dnsmasq:2.18:*:*:*:*:*:*:* | 2.18 | Vulnerable | dnsmasq |
| cpe:2.3:a:dnsmasq:dnsmasq:2.19:*:*:*:*:*:*:* | 2.19 | Vulnerable | dnsmasq |
| cpe:2.3:a:dnsmasq:dnsmasq:2.20:*:*:*:*:*:*:* | 2.20 | Vulnerable | dnsmasq |
- cpe:2.3:a:dnsmasq:dnsmasq:2.14:*:*:*:*:*:*:* Versions 2.14 Vulnerable ·dnsmasq
- cpe:2.3:a:dnsmasq:dnsmasq:2.15:*:*:*:*:*:*:* Versions 2.15 Vulnerable ·dnsmasq
- cpe:2.3:a:dnsmasq:dnsmasq:2.16:*:*:*:*:*:*:* Versions 2.16 Vulnerable ·dnsmasq
- cpe:2.3:a:dnsmasq:dnsmasq:2.17:*:*:*:*:*:*:* Versions 2.17 Vulnerable ·dnsmasq
- cpe:2.3:a:dnsmasq:dnsmasq:2.18:*:*:*:*:*:*:* Versions 2.18 Vulnerable ·dnsmasq
- cpe:2.3:a:dnsmasq:dnsmasq:2.19:*:*:*:*:*:*:* Versions 2.19 Vulnerable ·dnsmasq
- cpe:2.3:a:dnsmasq:dnsmasq:2.20:*:*:*:*:*:*:* Versions 2.20 Vulnerable ·dnsmasq
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2005-0876
- 2026-10-03 Alias added: GHSA-cjw9-x64q-vcrq
References
More Dnsmasq vulnerabilities
- TI-2006-01962 Dnsmasq 2.29 allows remote attackers to cause a denial of service (application crash) via… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2005-0876 · CVE Program
- CVE-2005-0876 · NVD
- FIRST EPSS
- GHSA-cjw9-x64q-vcrq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences