CVE-2026-20087Cisco Integrated Management Controller Cross-Site Scripting Vulnerability
- 4.8MediumCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with administrative privileges to conduct a stored XSS attack against a user of the interface. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the browser of the targeted user or access sensitive, browser-based information.
Timeline
ID reserved
By cisco
- 6 months later
· 6 months later
Published
- 21 days later
· 21 days 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 | Medium4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
| NVDNVD · Analyzed | 3.1 | Medium4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.
Affected products
Cisco · Cisco Enterprise NFV Infrastructure Software
- affected 4.1.1
- affected 3.9.1
- affected 3.5.2
- affected 3.12.2
- affected 3.6.2
- affected 3.9.2
- affected 3.11.3
- affected 3.11.1
- affected 3.5.1
- affected 3.3.1
- affected 3.10.2
- affected 3.12.1b
- affected 3.4.1
- affected 3.12.1a
- affected 3.6.3
- affected 3.8.1
- affected 3.11.2
- affected 3.12.1
- affected 3.12.3
- affected 3.10.1
- affected 3.6.1
- affected 3.10.3
- affected 3.7.1
- affected 4.1.2
- affected 4.2.1
- affected 4.2.2
- affected 4.4.1
- affected 4.4.2
- affected 4.5.1
- affected 4.4.3
- affected 4.6.1
- affected 4.7.1
- affected 4.6.2-FC2
- affected 4.6.2-FC3
- affected 4.6.2
- affected 4.8.1
- affected 4.8.2
- affected 4.9.1
- affected 4.6.3
- affected 4.9.2-FC5
- and 30 more
Cisco · Cisco Unified Computing System (Standalone)
- affected 4.0(2g)
- affected 3.1(2i)
- affected 3.1(1d)
- affected 4.0(4i)
- affected 4.1(1c)
- affected 4.0(2c)
- affected 4.0(1e)
- affected 4.0(2h)
- affected 4.0(4h)
- affected 4.0(1h)
- affected 4.0(2l)
- affected 3.1(3g)
- affected 4.0(1.240)
- affected 4.0(2f)
- affected 4.0(1g)
- affected 4.0(2i)
- affected 3.1(3i)
- affected 4.0(4d)
- affected 4.1(1d)
- affected 3.1(3c)
- affected 4.0(4k)
- affected 3.1(2d)
- affected 3.1(3a)
- affected 3.1(3j)
- affected 4.0(2d)
- affected 4.1(1f)
- affected 4.0(4j)
- affected 4.0(2m)
- affected 4.0(2k)
- affected 4.0(1c)
- affected 4.0(4f)
- affected 4.0(4c)
- affected 3.1(3d)
- affected 3.1(2g)
- affected 3.1(2c)
- affected 4.0(1d)
- affected 3.1(2e)
- affected 4.0(1a)
- affected 4.0(1b)
- affected 3.1(3b)
- and 110 more
Cisco · Cisco Unified Computing System E-Series Software (UCSE)
- affected 3.2.7
- affected 3.2.6
- affected 3.2.4
- affected 3.2.10
- affected 3.2.2
- affected 3.2.3
- affected 2.4.0
- affected 3.2.1
- affected 3.2.11.1
- affected 3.2.8
- affected 3.1.1
- affected 3.0.2
- affected 2.1.0
- affected 2.2.2
- affected 3.1.2
- affected 3.0.1
- affected 2.3.2
- affected 2.3.5
- affected 2.2.1
- affected 3.1.4
- affected 2.4.1
- affected 2.3.1
- affected 3.1.3
- affected 2.3.3
- affected 2.4.2
- affected 3.1.5
- affected 3.1.0
- affected 2.0.0
- affected 3.2.11.3
- affected 3.2.11.5
- affected 3.2.12.2
- affected 3.2.13.6
- affected 3.2.14
- affected 4.11.1
- affected 3.2.15
- affected 4.12.1
- affected 3.2.15.3
- affected 4.12.2
- affected 3.2.16.1
- affected 4.00
- and 2 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-2026-17939 (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-2026-20087)Record last updated .