7.2

CVE-2021-1391: cisco cisco_ios Active Debug Code

CVSS: 7.2v2.0HighModified
Published 24-03-2021Last modified 08-11-2024
Open JSON

Vulnerability summary

CVE-2021-1391 is a high (CVSS 7.2) Active Debug Code vulnerability in cisco cisco_ios. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.2% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.2/10
010
High · v2.0 (NVD)
EPSS score
0.32%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 24-03-2021
    PublishedVulnerability first disclosed.
  2. 08-11-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in the dragonite debugger of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root privilege. The vulnerability is due to the presence of development testing and verification scripts that remained on the device. An attacker could exploit this vulnerability by bypassing the consent token mechanism with the residual scripts on the affected device. A successful exploit could allow the attacker to escalate from privilege level 15 to root privilege.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

+0.01 pp

From 0.31% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.32%

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
  • cisco_iosn/a
  • ios12.2\(6\)i1 | 15.0\(2\)se13a | 15.1\(3\)svr1 | 15.1\(3\)svr2 | 15.1\(3\)svr3 | 15.1\(3\)svs | 15.1\(3\)svs1 | 15.2\(4\)ea10 | 15.2\(5\)e | 15.2\(5\)e1 | 15.2\(5\)e2 | 15.2\(5\)e2b | 15.2\(5\)e2c | 15.2\(5\)ea | 15.2\(5\)ex | 15.2\(5a\)e | 15.2\(5a\)e1 | 15.2\(5b\)e | 15.2\(5c\)e | 15.2\(6\)e | 15.2\(6\)e0a | 15.2\(6\)e0c | 15.2\(6\)e1 | 15.2\(6\)e1a | 15.2\(6\)e1s | 15.2\(6\)e2 | 15.2\(6\)e2a | 15.2\(6\)e2b | 15.2\(6\)e3 | 15.2\(6\)eb | 15.2\(7\)e | 15.2\(7\)e0a | 15.2\(7\)e0b | 15.2\(7\)e0s | 15.2\(7\)e1 | 15.2\(7\)e1a | 15.2\(7\)e2 | 15.2\(7\)e2a | 15.2\(7\)e2b | 15.2\(7\)e3 | 15.2\(7\)e3k | 15.2\(7a\)e0b | 15.2\(7b\)e0b | 15.3\(3\)jf13
  • ios_xe3.9.0e | 3.9.1e | 3.9.2be | 3.9.2e | 3.10.0ce | 3.10.0e | 3.10.1ae | 3.10.1e | 3.10.1se | 3.10.2e | 3.10.3e | 3.11.0e | 3.11.1ae | 3.11.1e | 3.11.2ae | 3.11.2e | 3.11.3ae | 3.11.3e | 16.8.1 | 16.8.1a | 16.8.1b | 16.8.1c | 16.8.1d | 16.8.1e | 16.8.1s | 16.8.2 | 16.8.3 | 16.9.1 | 16.9.1a | 16.9.1b | 16.9.1c | 16.9.1d | 16.9.1s | 16.9.2 | 16.9.2a | 16.9.2s | 16.9.3 | 16.9.3a | 16.9.3h | 16.9.3s | 16.9.4 | 16.9.4c | 16.9.5 | 16.9.5f | 16.9.6 | 16.10.1 | 16.10.1a | 16.10.1b | 16.10.1c | 16.10.1d | 16.10.1e | 16.10.1f | 16.10.1g | 16.10.1s | 16.10.2 | 16.10.3 | 16.11.1 | 16.11.1a | 16.11.1b | 16.11.1c | 16.11.1s | 16.11.2 | 16.12.1 | 16.12.1a | 16.12.1c | 16.12.1s | 16.12.1t | 16.12.1w | 16.12.1x | 16.12.1y | 16.12.1z | 16.12.1za | 16.12.2 | 16.12.2a | 16.12.2s | 16.12.2t | 16.12.3 | 16.12.3a | 16.12.3s | 17.1.1 | 17.1.1a | 17.1.1s | 17.1.1t | 17.1.2 | 17.2.1 | 17.2.1a | 17.2.1r | 17.2.1v | 17.2.2 | 17.2.3

1 vendor · 3 products

References

1 links