7.8

CVE-2013-5543: cisco asr_1001_firmware Improper Input Validation

CVSS: 7.8v2.0HighModified
Published 31-10-2013Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2013-5543 is a high (CVSS 7.8) Improper Input Validation vulnerability in cisco asr_1001_firmware. EPSS estimates a 1.89% chance of exploitation in the next 30 days, higher than 79.2% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
1.89%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 31-10-2013
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

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 service (device reload) via malformed ICMP error packets associated with a (1) TCP or (2) UDP session that is under inspection by the Zone-Based Firewall (ZBFW) component, aka Bug ID CSCtt26470.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

1.89%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

0.00 pp

From 1.89% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.89%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco7 products

1 vendor · 7 products

References

1 links