CVE-2021-1391

highpriority · track · 27OT risk · elevatedEPSS 0.003 · 25 %ileEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.32% (25th) EPSS
CVSS 7.2 · high
Is it mine?
304 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

7.2
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.1–7.2

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10
v3.16.7mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.8 · impact 5.9
v3.15.1mediumAV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:Nsecondary · FSTEC (BDU) RU
v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:Nsecondary · ENISA EU
v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:Nsecondary · psirt@cisco.com USexploitability 0.8 · impact 4.2
v3.16.1mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:Nsecondary · Cisco PSIRT US
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-489USCWE-489US
05

affected products (304)

Products and version ranges known to be affected.

showing 20 of 304
06

advisories (1)

Vendor and ecosystem advisories describing this.

  • cisco-sa-XE-FSM-Yj8qJbJcCisco IOS and IOS XE Software Privilege Escalation Vulnerability2021-03-24csaf · cisco_csafUS

    A vulnerability in the dragonite debugger of Cisco IOS Software and 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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisco_csafNVDCVE.orgMITRE
published 2021-03-24modified 2026-06-17
09

references (5)

External citations — patches, advisories, analysis.

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