Is there a public exploit for CVE-2026-15722?

No public exploit for CVE-2026-15722 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-2026-15722?

CVE-2026-15722 scores CVSS 7.5 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.83%.

What does CVE-2026-15722 affect?

CVE-2026-15722 affects Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Red Hat Directory Server 12.2 E4S for RHEL 9, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 9.6 Extended Update Support.

7.5 High

A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base).

CVE-2026-15722

A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The getruvelementfromberval() function in repl5ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP server by sending a crafted StartNSDS50ReplicationRequest extended operation containing a replica ID field with more than 16 digit characters. The overflow occurs during payload decoding, before any authorization check. Stack protectors limit impact to denial of service.

Assessment

CVSS: 7.5 (v3.1)
Severity: High
EPSS: 0.83% 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: 31 July 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:N/UI:N/S:U/C:N/I:N/A:H

At the source

EUVD (ENISA)

References

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