CVE-2026-112273

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.56% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 46.6% of scored records. A rank, not a probability.

NVD base score

6.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-22.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-19 13:55Z9 DAYS AGO

Last updated

2026-10-22 02:51Z7 DAYS AGO

Reserved

2026-10-19

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

6019974e04edb6bd01c461fdfd9a2c96d470d388ed4fb014210146494c2c37bd

• hackmd.iohttps://hackmd.io/@haindpwn/libtins-dns-name-parsing-oob-readthird-party-advisory
• github.comhttps://github.com/mfontanini/libtins/blob/v4.6/src/dns.cpp#L338-L389technical-description
• github.comhttps://github.com/mfontanini/libtinsproduct
• www.vulncheck.comVulnCheck Advisory: libtins through 4.6 Heap Out-of-Bounds Read via DNS::compose_namehttps://www.vulncheck.com/advisories/libtins-through-4.6-heap-out-of-bounds-read-via-dns-compose-namethird-party-advisory
• hackmd.iohttps://hackmd.io/@haindpwn/cve-2026-112273-112274-libtins-dns-name-parsing-oob-readexploit