How severe is CVE-2013-4125?

CVE-2013-4125 has a CVSS 2.0 base score of 5.4, rated medium severity.

Is CVE-2013-4125 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4125?

CVE-2013-4125 primarily affects Linux Linux Kernel. In total, 246 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4125?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-4125 published?

CVE-2013-4125 was published on 2013-07-15 and last updated on 2026-06-16.

CVE-2013-4125

CVE-2013-4125 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: Medium (CVSS 2.0 base score 5.4)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Linux Linux Kernel
Published: 2013-07-15
Last modified: 2026-06-16

Description

The fib6_add_rt2node function in net/ipv6/ip6_fib.c in the IPv6 stack in the Linux kernel through 3.10.1 does not properly handle Router Advertisement (RA) messages in certain circumstances involving three routes that initially qualified for membership in an ECMP route set until a change occurred for one of the first two routes, which allows remote attackers to cause a denial of service (system crash) via a crafted sequence of messages.

Frequently asked questions

What is CVE-2013-4125?: The fib6_add_rt2node function in net/ipv6/ip6_fib.c in the IPv6 stack in the Linux kernel through 3.10.1 does not properly handle Router Advertisement (RA) messages in certain circumstances involving three routes that initially qualified for membership in an ECMP route set until a change occurred for one of the first two routes, which allows remote attackers to cause a denial of service (system crash) via a crafted sequence of messages.
How severe is CVE-2013-4125?: CVE-2013-4125 has a CVSS 2.0 base score of 5.4, rated medium severity.
Is CVE-2013-4125 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4125?: CVE-2013-4125 primarily affects Linux Linux Kernel. In total, 246 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4125?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4125 published?: CVE-2013-4125 was published on 2013-07-15 and last updated on 2026-06-16.

References

Affected products (246)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.12:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.13:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.14:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.15:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.16:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.17:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.18:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.19:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.20:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.21:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.23:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.24:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.26:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.27:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.28:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.29:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.31:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.0.32:*:*:*:*:*:*:*

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