CVE-2026-107778

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Source

https://cve.org/CVERecord?id=CVE-2026-107778

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107778.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-107778

Downstream

Published

2026-10-08T20:15:54Z

Modified

2026-10-09T10:46:12Z

Severity

7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

MIT krb5 through 1.22.2 NULL Pointer Dereference via krb5_rd_cred()

Details

MIT Kerberos 5 (krb5) through 1.22.2 contains a NULL pointer dereference in make_cred_list() in rd_cred.c that allows authenticated Kerberos clients to crash services by sending mismatched KRB-CRED arrays. Attackers can send forwarded credentials with more tickets than ticket_info entries through gss_accept_sec_context() to crash GSS-API acceptor services, causing denial of service.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107778.json"
}

References

Affected packages

Git / github.com/krb5/krb5

Affected ranges

Type

GIT

Repo

https://github.com/krb5/krb5

Events

Introduced

Last Affected

8570e77819563e036027e1da789d08ec9333ed4d

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.22.2"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

krb5-1.*

krb5-1.22-beta1

krb5-1.22-final

krb5-1.22.1-final

krb5-1.22.2-final

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107778.json"