CVE-2026-112273

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Source
https://cve.org/CVERecord?id=CVE-2026-112273
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112273.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-112273
Downstream
Published
2026-10-19T13:55:20Z
Modified
2026-10-21T02:55:54Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
libtins through 4.6 Heap Out-of-Bounds Read via DNS::compose_name
Details

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.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-125"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112273.json"
}
References

Affected packages

Git / github.com/mfontanini/libtins

Affected ranges

Type
GIT
Repo
https://github.com/mfontanini/libtins
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
2d2f7012d9f3a16d684a55ba39f1215b6aef5429
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "last_affected":  "4.6"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        }
    ]
}

Affected versions

v0.*
v0.2
v0.3
v1.*
v1.0
v1.2
v2.*
v2.0
v3.*
v3.0
v3.1
v3.2
v3.3
v3.4
v4.*
v4.1
v4.2
v4.3
v4.4
v4.5
v4.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112273.json"