Is there a public exploit for CVE-2026-11774?

No public exploit for CVE-2026-11774 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-2026-11774?

CVE-2026-11774 scores CVSS 7.6 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.68%.

What does CVE-2026-11774 affect?

CVE-2026-11774 affects Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Directory Server 11.7 E4S for RHEL 8, Red Hat Directory Server 12.4 E4S for RHEL 9, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 9.6 Extended Update Support.

7.6 High

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

CVE-2026-11774

An integer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasliostartpacket(), adding sizeof(uint32t) to a crafted SASL packet length prefix of 0xFFFFFFFC causes unsigned wraparound to zero, bypassing the nsslapd-maxsasliosize limit and leading to a heap buffer overflow of up to approximately 2 megabytes of attacker-controlled data. After a successful SASL bind with integrity protection (SSF > 0), a remote attacker can cause a Denial of Service (DoS) or achieve Remote Code Execution (RCE). In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, enrolled host, or service account can trigger this vulnerability over the network. This flaw is independent of CVE-2025-14905, which patched schema.c only and did not modify saslio.c.

Assessment

CVSS: 7.6 (v3.1)
Severity: High
EPSS: 0.68% 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: 11 June 2026
Last updated: 4 November 2026
Affected: Red Hat · 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 · Red Hat Directory Server 12.2 E4S for RHEL 9
Assigner: redhat

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

At the source

EUVD (ENISA)

References

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