CVE-2026-11610

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-07. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 0

A fix is available — apply it.

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 sasl_io_recv() in sasl_io.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.

CVSS v3
8.8
EG Score
8.8(high)
EPSS
45.8%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 8, 2026

Advisory Details (2)

Auto-updated Jul 7, 2026
Patch available. Sources: redhat.
redhat

2484414 – (CVE-2026-11610) CVE-2026-11610 389-ds-base: 389-ds-base: Heap buffer overflow in sasl_io_recv() via padded SASL UNBIND

https://bugzilla.redhat.com/show_bug.cgi?id=2484414
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-11610

Vendor Advisories for CVE-2026-11610(18)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(17)

Vendor / EcosystemFixed in / PatchReleasedSource
redhat389-ds-base-0:2.2.4-19.el9_22026-07-08redhat
redhatredhat-ds:12-9020020260703060155.1674d5742026-07-08redhat
redhat389-ds-base-0:2.6.1-22.el9_62026-07-08redhat
redhatdirsrv/dirsrv-container-rhel10:17834521002026-07-08redhat
redhat389-ds-base-0:3.0.6-19.el10_02026-07-08redhat
redhatredhat-ds:11-8100020260702145313.37ed7c032026-07-07redhat
redhatredhat-ds:12-9040020260703055735.1674d5742026-07-07redhat
redhat389-ds-base-0:1.3.11.1-13.el7_92026-07-07redhat
redhatredhat-ds:11-8060020260702180044.0ca98e7e2026-07-07redhat
redhat389-ds:1.4-8040020260629123121.96015a922026-07-07redhat
redhat389-ds:1.4-8060020260626130540.824efc522026-07-07redhat
redhat389-ds:1.4-8080020260630025241.6dbb38032026-07-07redhat
redhat389-ds:1.4-8100020260626120929.25e700aa2026-07-07redhat
redhat389-ds-base-0:3.2.0-8.el10_22026-07-07redhat
redhat389-ds-base-0:2.8.0-8.el9_82026-07-07redhat
redhat389-ds-base-0:2.4.5-26.el9_42026-07-07redhat
redhatredhat-ds:11-8080020260702180836.f969626e2026-07-07redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Frequently asked(5)

What is CVE-2026-11610?
CVE-2026-11610 is a high vulnerability published on July 7, 2026. 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…
When was CVE-2026-11610 disclosed?
CVE-2026-11610 was first published in the National Vulnerability Database on July 7, 2026, with the most recent update on July 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11610 actively exploited?
CVE-2026-11610 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11610?
CVE-2026-11610 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-11610?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11610, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-11610

Explore →

Is Your Infrastructure Affected by CVE-2026-11610?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs