Is CVE-2017-3169 in the CISA KEV catalog?

No. CVE-2017-3169 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-3169?

CVE-2017-3169 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-3169?

CVE-2017-3169 has an EPSS score of 19.95% (97th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-3169?

Upgrade apache2 on debian 11 to 2.4.25-4 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2017-3169

CRITICALEPSS 97th pctl

9.8

CVSS v3

NVD

Description

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_ssl may dereference a NULL pointer when third-party modules call ap_hook_process_connection() during an HTTP request to an HTTPS port.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

apache2Debian

Fixed in:2.4.25-4CVE-2017-3169

apache2Ubuntu

Fixed in:2.4.7-1ubuntu4.16USN-3340-1

Fixed in:2.4.18-2ubuntu3.3USN-3340-1

apache2-binUbuntu

Fixed in:2.4.7-1ubuntu4.16USN-3340-1

Fixed in:2.4.18-2ubuntu3.3USN-3340-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

19.95%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.