Is CVE-2010-4671 in the CISA KEV catalog?

No. CVE-2010-4671 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2010-4671?

CVE-2010-4671 has a CVSS v2 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2010-4671?

CVE-2010-4671 has an EPSS score of 3.62% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2010-4671?

Upgrade ios to 15.0(1)xa5 or later.

CVE & CISA-KEV Catalog

CVE-2010-4671

HIGHEPSS 88th pctl

7.8

CVSS v2

NVD

Description

The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1)XA5 allows remote attackers to cause a denial of service (CPU consumption and device hang) by sending many Router Advertisement (RA) messages with different source addresses, as demonstrated by the flood_router6 program in the thc-ipv6 package, aka Bug ID CSCti33534.

CWE-400Resource Exhaustion

How to fix

Remediation Available

iosNVD

Affected:< 15.0(1)xa5Fixed in:15.0(1)xa5CVE-2010-4671derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.62%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Exploit2

Third-Party Advisory4

Other references1

ciscosystems.com

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	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 2026-04-29.