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Vulnerability · Published Aug 20, 2026 · Assigned by redhat

CVE-2026-73199Ipa: freeipa: null pointer dereference in `ipa-enrollment` extended operation (`join_oid`) via missing request value

Medium 6.5

In plain English

A medium-severity null pointer dereference in Red Hat Enterprise Linux 10 from Red Hat. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 70.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A flaw was found in the `ipa-enrollment` SLAPI plugin. A remote authenticated client can exploit a null pointer dereference vulnerability by sending a malformed Lightweight Directory Access Protocol (LDAP) extended operation. By omitting the request value for the `JOIN_OID` in the `ipa-enrollment` extended operation, an attacker can trigger a server crash, potentially causing a denial of service.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12freeipano fix listedDEBIAN-CVE-2026-73199
Debian:13freeipano fix listedDEBIAN-CVE-2026-73199
Ubuntu:22.04:LTSfreeipano fix listedUBUNTU-CVE-2026-73199
Ubuntu:24.04:LTSfreeipano fix listedUBUNTU-CVE-2026-73199
Ubuntu:26.04:LTSfreeipano fix listedUBUNTU-CVE-2026-73199
Ubuntu:26.10freeipano fix listedUBUNTU-CVE-2026-73199

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References