What is CVE-2026-8850?

CVE-2026-8850 is a high-severity vulnerability in IBM Aix, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-05-26.

How severe is CVE-2026-8850?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in IBM Aix

CVE-2026-8850

IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service via the optional module mod_ibm_upload.

Published 2026-05-26 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.4th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

www.ibm.com/support/pages/node/7274065 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-8850?: CVE-2026-8850 is a high-severity vulnerability in IBM Aix, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-05-26.
How severe is CVE-2026-8850?: High severity. CVSS v3 base score is 7.5 out of 10.