libtins through 4.6 contains a heap out-of-bounds read vulnerability in DNS::compose_name in src/dns.cpp that allows remote attackers to read past the packet buffer by sending a label ending exactly at the packet end. Attackers can deliver crafted DNS packets whose additional, answer, or authority records trigger a one-byte read when parsed, crashing applications on hardened allocators.
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Affected Vendors & Products
Advisories
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Fixes
Solution
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Workaround
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References
History
Mon, 19 Oct 2026 14:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | libtins through 4.6 contains a heap out-of-bounds read vulnerability in DNS::compose_name in src/dns.cpp that allows remote attackers to read past the packet buffer by sending a label ending exactly at the packet end. Attackers can deliver crafted DNS packets whose additional, answer, or authority records trigger a one-byte read when parsed, crashing applications on hardened allocators. | |
| Title | libtins through 4.6 Heap Out-of-Bounds Read via DNS::compose_name | |
| Weaknesses | CWE-125 | |
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-19T13:55:20.684Z
Reserved: 2026-10-19T13:25:28.347Z
Link: CVE-2026-112273
No data.
Status : Deferred
Published: 2026-10-19T14:17:05.080
Modified: 2026-10-19T21:14:14.150
Link: CVE-2026-112273
No data.
OpenCVE Enrichment
Updated: 2026-10-19T15:45:17Z
Weaknesses