Is CVE-2025-61103 in the CISA KEV catalog?

No. CVE-2025-61103 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-61103?

CVE-2025-61103 has a CVSS v3 base score of 7.5 (Moderate).

What is the EPSS score for CVE-2025-61103?

CVE-2025-61103 has an EPSS score of 0.58% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-61103?

Upgrade frr on debian 12 to 8.4.4-1.1~deb12u2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2025-61103

MEDIUM

7.5

CVSS v3

NVD

Description

FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_lan_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

frrDebian

Fixed in:8.4.4-1.1~deb12u2CVE-2025-61103

Fixed in:10.3-3+deb13u1CVE-2025-61103

Fixed in:10.5.1-3CVE-2025-61103

frrUbuntu

Fixed in:8.1-1ubuntu1.14USN-8046-1

Fixed in:8.4.4-1.1ubuntu6.5USN-8046-1

Fixed in:10.4.1-3ubuntu1.1USN-8046-1

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

0.58%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Third-Party Advisory2

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 2025-10-31.