CVE-2019-13951
CVE-2019-13951 is a critical-severity vulnerability in Gdnsd with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (74th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Gdnsd
- Published:
- Last modified:
Description
The set_ipv4() function in zscan_rfc1035.rl in gdnsd 3.x before 3.2.1 has a stack-based buffer overflow via a long and malformed IPv4 address in zone data.
Frequently asked questions
- What is CVE-2019-13951?
- The set_ipv4() function in zscan_rfc1035.rl in gdnsd 3.x before 3.2.1 has a stack-based buffer overflow via a long and malformed IPv4 address in zone data.
- How severe is CVE-2019-13951?
- CVE-2019-13951 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2019-13951 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-13951?
- CVE-2019-13951 affects Gdnsd. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-13951?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2019-13951 published?
- CVE-2019-13951 was published on 2019-07-18 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:gdnsd:gdnsd:3.2.0:*:*:*:*:*:*:*
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