Is CVE-2026-42535 in the CISA KEV catalog?

No. CVE-2026-42535 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-42535?

CVE-2026-42535 has a CVSS v3 base score of 7.5 (Moderate).

What is the EPSS score for CVE-2026-42535?

CVE-2026-42535 has an EPSS score of 0.54% (41th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42535?

Upgrade apache2 on debian 11 to 2.4.67-1~deb11u3 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2026-42535

MEDIUM

7.5

CVSS v3

NVD

Description

A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to directly manipulate trusted DAV property databases, potentially causing child process crashes. Users are recommended to upgrade to version 2.4.68, which fixes this issue.

CWE-668

How to fix

Remediation Available

apache2Debian

Fixed in:2.4.67-1~deb11u3CVE-2026-42535

Fixed in:2.4.68-1CVE-2026-42535

Apache Lounge httpdWindows application

Affected:2.4.68Fixed in:2.4.68Apache Lounge

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

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U

Exploit Intelligence

0.54%probability of exploitation in 30 days

41stpercentile

Moderate risk: more likely to be exploited than 41% of all known CVEs.

References

Vendor Advisory1

httpd.apache.org

Third-Party Advisory1

openwall.com

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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 2026-06-09.