CVE-2013-1166· NVD / CVE Program· CNA cisco

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-a

Noroxi assessment

Priority: Monitor (action score 32/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 1.8% (FIRST EPSS); higher than 78.9% of all records.
No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

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.

HighCVSS 7.8 · v2.0—No exploit No fix recorded

Published: Apr 11, 2013
Updated: Jun 16, 2026
EPSS: 1.9% · 79th percentile
CWE: CWE-20

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 1.9%

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
cisco	asr 1001	cpe:2.3:h:cisco:asr_1001
cisco	asr 1002	cpe:2.3:h:cisco:asr_1002
cisco	asr 1002-x	cpe:2.3:h:cisco:asr_1002-x
cisco	asr 1002 fixed router	cpe:2.3:h:cisco:asr_1002_fixed_router
cisco	asr 1004	cpe:2.3:h:cisco:asr_1004
cisco	asr 1006	cpe:2.3:h:cisco:asr_1006
cisco	asr 1023 router	cpe:2.3:h:cisco:asr_1023_router
cisco	ios xe	cpe:2.3:o:cisco:ios_xe

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

cisco asr 1001all versions
cisco asr 1002all versions
cisco asr 1002 fixed routerall versions
cisco asr 1002-xall versions
cisco asr 1004all versions
cisco asr 1006all versions
cisco asr 1023 routerall versions
cisco ios xe3.2.0s
cisco ios xe3.2.1s
cisco ios xe3.2.2s
cisco ios xe3.3.0s
cisco ios xe3.3.1s
cisco ios xe3.3.2s
cisco ios xe3.4.0as
cisco ios xe3.4.0s
cisco ios xe3.4.1s
cisco ios xe3.4.2s
cisco ios xe3.4.3s
cisco ios xe3.4.4s
cisco ios xe3.7.0s

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: C · the service can be disrupted

Attack complexity: Low
Confidentiality impact: None
Integrity impact: None
Availability impact: C

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

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

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records