CVE-2026-20046Cisco IOS XR Software CLI Privilege Escalation Vulnerability
- 8.8HighCVSS base score
- 0.15%Exploitation in 30 daysEPSS · top 95% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local attacker to elevate privileges and gain full administrative control of an affected device. This vulnerability is due to incorrect mapping of a command to task groups within the source code. An attacker with a low-privileged account could exploit this vulnerability by using the CLI command to bypass the task group–based checks. A successful exploit could allow the attacker to elevate privileges and perform actions on an affected device without authorization checks.
Timeline
ID reserved
By cisco
- 5 months later
· 5 months later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.15% · top 95% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected 6.6.1
- affected 6.5.3
- affected 7.0.1
- affected 6.5.1
- affected 6.5.2
- affected 6.6.2
- affected 6.6.25
- affected 7.1.1
- affected 7.0.90
- affected 6.6.3
- affected 7.0.2
- affected 7.1.2
- affected 7.2.1
- affected 6.6.4
- affected 7.3.1
- affected 7.4.1
- affected 7.2.2
- affected 7.3.2
- affected 7.5.1
- affected 7.6.1
- affected 7.5.2
- affected 7.3.4
- affected 7.3.3
- affected 7.4.2
- affected 7.7.1
- affected 7.6.2
- affected 7.8.1
- affected 7.7.2
- affected 7.9.1
- affected 7.8.2
- affected 7.5.4
- affected 7.8.22
- affected 7.10.1
- affected 7.7.21
- affected 7.9.2
- affected 7.5.5
- affected 7.11.1
- affected 7.10.2
- affected 7.3.6
- affected 24.1.1
- and 17 more
What to do
Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-11216 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-20046)Record last updated .