CVE Explorer
CVE-2026-27831
rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"rldns","vendor":"bluedragonsecurity","versions":[{"status":"affected","version":"= 1.3"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:c44717af79ff9583e4892c521b49aa2e7d14e11790929a3a238df72e6157c6f7 · sha256:e0a7fc2df7fcff82… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:c44717af79ff9583e4892c521b49aa2e7d14e11790929a3a238df72e6157c6f7 · sha256:e0a7fc2df7fcff82… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:c44717af79ff9583e4892c521b49aa2e7d14e11790929a3a238df72e6157c6f7 · sha256:e0a7fc2df7fcff82… · /containers/cna/problemTypes/0/descriptions/0
Source references
5 source assertions{"name":"https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4","tags":["x_refsource_MISC"],"url":"https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c44717af79ff9583e4892c521b49aa2e7d14e11790929a3a238df72e6157c6f7 · sha256:e0a7fc2df7fcff82… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c44717af79ff9583e4892c521b49aa2e7d14e11790929a3a238df72e6157c6f7 · sha256:e0a7fc2df7fcff82… · /containers/adp/0/references/0
{"name":"https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c44717af79ff9583e4892c521b49aa2e7d14e11790929a3a238df72e6157c6f7 · sha256:e0a7fc2df7fcff82… · /containers/cna/references/0
{"name":"https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff","tags":["x_refsource_MISC"],"url":"https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c44717af79ff9583e4892c521b49aa2e7d14e11790929a3a238df72e6157c6f7 · sha256:e0a7fc2df7fcff82… · /containers/cna/references/2
{"name":"https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031","tags":["x_refsource_MISC"],"url":"https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c44717af79ff9583e4892c521b49aa2e7d14e11790929a3a238df72e6157c6f7 · sha256:e0a7fc2df7fcff82… · /containers/cna/references/3
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.