Is CVE-2026-52920 in the CISA KEV catalog?

No. CVE-2026-52920 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-52920?

CVE-2026-52920 has a CVSS v3 base score of 7.0 (Moderate).

What is the EPSS score for CVE-2026-52920?

CVE-2026-52920 has an EPSS score of 0.30% (22th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-52920?

Upgrade linux on debian 11 to 5.10.259-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-52920

MEDIUM

7.0

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_policy: fix strict mode inbound policy matching match_policy_in() walks sec_path entries from the last transform to the first one, but strict policy matching needs to consume info->pol[] in the same forward order as the rule layout. Derive the strict-match policy position from the number of transforms already consumed so that multi-element inbound rules are matched consistently.

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.259-1CVE-2026-52920

Fixed in:6.1.176-1CVE-2026-52920

Fixed in:6.12.94-1CVE-2026-52920

Fixed in:7.0.10-1CVE-2026-52920

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 VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.30%probability of exploitation in 30 days

22ndpercentile

Low risk: more likely to be exploited than 22% of all known CVEs.

References

Other references8

Embed a live status badge for CVE-2026-52920

Markdown

[![CVE-2026-52920](https://tridentstack.com/cve/badge/CVE-2026-52920.svg)](https://tridentstack.com/cve/CVE-2026-52920)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-52920"><img src="https://tridentstack.com/cve/badge/CVE-2026-52920.svg" alt="CVE-2026-52920"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2026-06-28.