7.5

CVE-2026-8852: ibm http_server Reachable Assertion

CVSS: 7.5v3.1HighAnalyzed
Published 26-05-2026Last modified 26-05-2026
Open JSON

Vulnerability summary

CVE-2026-8852 is a high (CVSS 7.5) Reachable Assertion vulnerability in ibm http_server. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 25% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.33%
0%100%
Low · +0.14 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 26-05-2026
    PublishedVulnerability first disclosed.
  2. 26-05-2026
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.33%

Chance of exploitation in the next 30 days

Percentile

25%

Versus all other CVEs

30-day change

+0.14 pp

From 0.20% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.33%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ibm1 product
  • http_server≥ 8.5.0, ≤ Interim Fix 002 | 9.0 | ≥ 8.5.0.0, < 8.5.5.30 | ≥ 9.0.0.0, < 9.0.5.29

1 vendor · 1 product

References

1 links