How severe is CVE-2013-1166?

CVE-2013-1166 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2013-1166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-1166?

CVE-2013-1166 primarily affects Cisco Asr 1001. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-1166?

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-2013-1166 published?

CVE-2013-1166 was published on 2013-04-11 and last updated on 2026-06-16.

CVE-2013-1166

CVE-2013-1166 is a high-severity vulnerability in Cisco Asr 1001 with a CVSS 2.0 base score of 7.8. 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-20.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Asr 1001
Published: 2013-04-11
Last modified: 2026-06-16

Description

Cisco IOS XE 3.2 through 3.4 before 3.4.5S, and 3.5 through 3.7 before 3.7.1S, on 1000 series Aggregation Services Routers (ASR), when VRF-aware NAT and SIP ALG are enabled, allows remote attackers to cause a denial of service (card reload) by sending many SIP packets, aka Bug ID CSCuc65609.

Frequently asked questions

What is CVE-2013-1166?: Cisco IOS XE 3.2 through 3.4 before 3.4.5S, and 3.5 through 3.7 before 3.7.1S, on 1000 series Aggregation Services Routers (ASR), when VRF-aware NAT and SIP ALG are enabled, allows remote attackers to cause a denial of service (card reload) by sending many SIP packets, aka Bug ID CSCuc65609.
How severe is CVE-2013-1166?: CVE-2013-1166 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2013-1166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-1166?: CVE-2013-1166 primarily affects Cisco Asr 1001. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-1166?: 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-2013-1166 published?: CVE-2013-1166 was published on 2013-04-11 and last updated on 2026-06-16.

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130410-asr1000

Affected products (20)

cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002_fixed_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1023_router:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.3.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.3.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.3.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.4.0as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.4.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.4.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.4.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.4.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.4.4s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.0s:*:*:*:*:*:*:*

More vulnerabilities in Cisco Asr 1001

CVE-2013-5547 — High (CVSS 7.8): Cisco IOS XE 3.9 before 3.9.2S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload)…
CVE-2013-5546 — High (CVSS 7.8): The TCP reassembly feature in Cisco IOS XE 3.7 before 3.7.3S and 3.8 before 3.8.1S on 1000 ASR devices allows remote…
CVE-2013-5545 — High (CVSS 7.8): The PPTP ALG implementation in Cisco IOS XE 3.9 before 3.9.2S on 1000 ASR devices allows remote attackers to cause a…
CVE-2013-5543 — High (CVSS 7.8): Cisco IOS XE 3.4 before 3.4.2S and 3.5 before 3.5.1S on 1000 ASR devices allows remote attackers to cause a denial of…
CVE-2013-2779 — High (CVSS 7.8): Cisco IOS XE 3.4 before 3.4.5S, and 3.5 through 3.7 before 3.7.1S, on 1000 series Aggregation Services Routers (ASR)…
CVE-2013-1165 — High (CVSS 7.8): Cisco IOS XE 2.x and 3.x before 3.4.5S, and 3.5 through 3.7 before 3.7.1S, on 1000 series Aggregation Services Routers…

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