How severe is CVE-2026-9170?

CVE-2026-9170 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-9170 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-9170?

CVE-2026-9170 primarily affects Ibm Http Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-9170?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-9170 have an EU (EUVD) identifier?

Yes. CVE-2026-9170 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31939.

When was CVE-2026-9170 published?

CVE-2026-9170 was published on 2026-05-26 and last updated on 2026-06-17.

CVE-2026-9170

CVE-2026-9170 is a critical-severity vulnerability in Ibm Http Server with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31939
Weakness: CWE-94
Affected product: Ibm Http Server
Published: 2026-05-26
Last modified: 2026-06-17

Description

IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service and a potential remote code execution due to improper input validation.

Frequently asked questions

What is CVE-2026-9170?: IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service and a potential remote code execution due to improper input validation.
How severe is CVE-2026-9170?: CVE-2026-9170 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-9170 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-9170?: CVE-2026-9170 primarily affects Ibm Http Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-9170?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-9170 have an EU (EUVD) identifier?: Yes. CVE-2026-9170 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31939.
When was CVE-2026-9170 published?: CVE-2026-9170 was published on 2026-05-26 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/node/7274065

Affected products (2)

cpe:2.3:a:ibm:http_server:8.5.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:http_server:9.0.0.0:*:*:*:*:*:*:*

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