Is there a public exploit for CVE-2026-11610?

No public exploit for CVE-2026-11610 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-11610?

CVE-2026-11610 scores CVSS 8.8 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.49%.

What does CVE-2026-11610 affect?

CVE-2026-11610 affects 389ds, Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9, Red Hat Directory Server 11.5 E4S for RHEL 8, Red Hat Directory Server 11.9 for RHEL 8, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.

8.8 High

A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base).

CVE-2026-11610

A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). After a successful SASL bind with integrity protection (SSF > 0), an authenticated attacker can send a specially crafted oversized LDAP UNBIND packet that is copied into a 512-byte heap receive buffer without a bounds check in sasliorecv() in saslio.c. This allows up to approximately 2 megabytes of attacker-controlled data to overflow the buffer, causing a denial of service (server crash). In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, any enrolled host, or any service account can trigger this vulnerability over the network after authenticating via GSSAPI. The vulnerable code path has existed since approximately 2013 (389-ds-base 1.3.2) and was not addressed by the CVE-2025-14905 fix, which patched a separate heap overflow in schema.c only.

Assessment

CVSS: 8.8 (v3.1)
Severity: High
EPSS: 0.49% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 7 July 2026
Last updated: 4 November 2026
Affected: 389ds · Red Hat · 389-ds-base · Red Hat Directory Server 11.5 E4S for RHEL 8 · Red Hat Directory Server 11.7 E4S for RHEL 8 · Red Hat Directory Server 11.9 for RHEL 8
Assigner: redhat

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

At the source

EUVD (ENISA)

References

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