CVE-2013-5549
CVE-2013-5549 is a high-severity vulnerability in Cisco Ios Xr with a CVSS 2.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 2.0 base score 7.1)
- EPSS exploit prediction: 2% (74th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Cisco Ios Xr
- Published:
- Last modified:
Description
Cisco IOS XR 3.8.1 through 4.2.0 does not properly process fragmented packets within the RP-A, RP-B, PRP, and DRP-B route-processor components, which allows remote attackers to cause a denial of service (transmission outage) via (1) IPv4 or (2) IPv6 traffic, aka Bug ID CSCuh30380.
Frequently asked questions
- What is CVE-2013-5549?
- Cisco IOS XR 3.8.1 through 4.2.0 does not properly process fragmented packets within the RP-A, RP-B, PRP, and DRP-B route-processor components, which allows remote attackers to cause a denial of service (transmission outage) via (1) IPv4 or (2) IPv6 traffic, aka Bug ID CSCuh30380.
- How severe is CVE-2013-5549?
- CVE-2013-5549 has a CVSS 2.0 base score of 7.1, rated high severity.
- Is CVE-2013-5549 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2013-5549?
- CVE-2013-5549 primarily affects Cisco Ios Xr. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2013-5549?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2013-5549 published?
- CVE-2013-5549 was published on 2013-10-25 and last updated on 2026-06-16.
References
Affected products (16)
- cpe:2.3:o:cisco:ios_xr:3.8.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:3.8.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:3.8.3:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:3.8.4:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:3.9.0:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:3.9.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:3.9.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:4.0.0:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:4.0.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:4.0.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:4.0.3:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:4.0.4:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:4.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:4.1.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:4.1.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xr:4.2.0:*:*:*:*:*:*:*
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