Cyber Posture

CVE-2026-8850

High
Microsoft: not affectedMSmacOS: not affectedMacLinux: not affectedLnxMobile: not affectedMobNetwork: not affectedNetApplication: affectedAppOther: not affectedOth

Published: 26 May 2026

Published
26 May 2026
Modified
26 May 2026
KEV Added
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Patch
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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0002 3.8th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-8850 is a high-severity NULL Pointer Dereference (CWE-476) vulnerability in Ibm Http Server. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 3.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

Threat & Defense at a Glance

What attackers do: exploitation maps to Application or System Exploitation (T1499.004).
Threat & Defense Details

MITRE ATT&CK Enterprise TechniquesAI

T1499.004 Application or System Exploitation Impact
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
attack.mitre.org →
Why these techniques?

NULL pointer dereference in public-facing IBM HTTP Server module directly enables application/system exploitation for DoS impact.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

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

Deeper analysisAI

Automated synthesis unavailable for this CVE.

Details

CWE(s)
CWE-476
OWASP Top 10 Web 2025
A10:2025

Affected Products

ibm
http server
8.5.0.0 — 8.5.5.30 · 9.0.0.0 — 9.0.5.29

EU & UK References

References