8.8

CVE-2021-1539: cisco cisco asr 5000 series software Incorrect Authorization

CVSS: 8.8v3.1HighModified
Published 04-06-2021Last modified 07-11-2024
Open JSON

Vulnerability summary

CVE-2021-1539 is a high (CVSS 8.8) Incorrect Authorization vulnerability in cisco cisco asr 5000 series software. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 64.8% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
1.09%
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. 04-06-2021
    PublishedVulnerability first disclosed.
  2. 07-11-2024
    Last modifiedVulnerability information updated.

Description

Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.09%

Chance of exploitation in the next 30 days

Percentile

65%

Versus all other CVEs

30-day change

0.00 pp

From 1.09% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.09%

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

Cisco3 products

1 vendor · 3 products

References

1 links