CVE-2021-1281 json
Cisco IOS XE SD-WAN Software Privilege Escalation Vulnerability
published 2021-03-24 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-6748
- cvss
- 5.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
A vulnerability in CLI management in Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to access the underlying operating system as the root user. This vulnerability is due to the way the software handles concurrent CLI sessions. An attacker could exploit this vulnerability by authenticating to the device as an administrative user and executing a sequence of commands. A successful exploit could allow the attacker to obtain access to the underlying operating system as the root user.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.1 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N |
| NVD | 3.1 | 6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.9 | AV:L/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Cisco Cisco IOS XE Software
Classification
- Weakness
-
- CWE-399 Resource Management Errors
- Technology feeds
References
Sources
- CVE List CVE-2021-1281
- NVD CVE-2021-1281
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