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Public proof of conceptAwaiting NVD analysis

CVE-2026-112314

Krb5: mit krb5 gss-rpc client memory leak on xid mismatch retries

A public proof of concept exists; no exploitation attested.

  • Published2026-11-09
  • WeaknessCWE-772

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

clnttcp_call() in lib/rpc/clnt_tcp.c in MIT Kerberos 5 (aka krb5) does not free the RPC reply verifier between retries, which allows remote attackers to cause a denial of service (memory leak in GSS-RPC client programs) by injecting RPC replies with mismatched XIDs or by triggering authentication retries.

Timeline

dates in UTC
  1. 2026-11-0919:08CVE publishedCNA

Versions per branch

Products declared by the CNA

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-09

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-112314 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2026-11-09
  • CNACVSS 3.17.52026-11-09
  • NVDCVSS 3.17.5read 2026-11-09
  • CNAweakness (CWE)CWE-7722026-11-09
  • NVDweakness (CWE)CWE-772read 2026-11-09
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-11-09
Last Modified
2026-11-09
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-vhj5-cwj8-wqq6

Frequently asked questions

What is CVE-2026-112314?

clnttcp_call() in lib/rpc/clnt_tcp.c in MIT Kerberos 5 (aka krb5) does not free the RPC reply verifier between retries, which allows remote attackers to cause a denial of service (memory leak in GSS-RPC client programs) by injecting RPC replies with mismatched XIDs or by triggering authentication retries.

Is CVE-2026-112314 actively exploited?

A proof-of-concept exploit exists for CVE-2026-112314, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-112314?

CVE-2026-112314 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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