CVE-2026-16560

mediumCVSS 5.3covered by 1 sourcefirst seen 2026-07-22

A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.

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Exploitation outlook

Low exploitation risk0.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-16560: A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a …nvd · 2026-07-22

External references

NVD record for CVE-2026-16560

CVE.org record

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