Is CVE-2026-45847 in the CISA KEV catalog?

No. CVE-2026-45847 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-45847?

CVE-2026-45847 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2026-45847?

CVE-2026-45847 has an EPSS score of 0.16% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-45847?

Upgrade linux on debian 12 to 6.1.170-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-45847

MEDIUM

5.5

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: net: remove WARN_ON_ONCE when accessing forward path array Although unlikely, recent support for IPIP tunnels increases chances of reaching this WARN_ON_ONCE if userspace manages to build a sufficiently long forward path. Remove it.

CWE-617

How to fix

Remediation Available

linuxDebian

Fixed in:6.1.170-1CVE-2026-45847

Fixed in:6.12.85-1CVE-2026-45847

Fixed in:6.18.14-1CVE-2026-45847

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 ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.16%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Patch7

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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 2026-06-25.