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CVE-2013-5543

20
FAUCET Score

CVE-2013-5543 describes a denial-of-service vulnerability in Cisco IOS XE 3.4 and 3.5 on ASR 1000 series devices. Remote attackers can trigger a device reload by sending malformed ICMP error packets to TCP or UDP sessions inspected by the Zone-Based Firewall. With a CVSS score of 7.8, this vulnerability is considered high severity, requiring no authentication and having a low attack complexity, leading to a complete loss of availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.4.0asCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.4.0as:*:*:*:*:*:*:*
3.4.0sCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.4.0s:*:*:*:*:*:*:*
3.4.1sCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.4.1s:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.89%
Probability of exploitation in next 30 days
EPSS Percentile
77.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0189 is in the 61st percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20131030-asr1000
Vendor Advisory