CVE-2014-2120
MediumExploitedPublic exploitCross-site scripting (XSS) vulnerability in the WebVPN login page in Cisco Adaptive Security Appliance (ASA) Software allows remote attackers to inject arbitrary web script or HTML via an unspecified parameter, aka Bug ID CSCun19025.
Published Mar 18, 2014 · Updated Apr 21, 2026
Key Facts
Patch immediately- CVE-2014-2120 is a medium-severity vulnerability (CVSS 5.4 v3.1) affecting Adaptive Security Appliance Software (Cisco).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 7, 2024. Public exploit code is available.
- EPSS estimates a 23% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
5.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS (30-day exploit likelihood)
23%
Higher than 97.6% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2014-2120 brief as a PDF
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Description
Cross-site scripting (XSS) vulnerability in the WebVPN login page in Cisco Adaptive Security Appliance (ASA) Software allows remote attackers to inject arbitrary web script or HTML via an unspecified parameter, aka Bug ID CSCun19025.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 12, 2024 | Dec 3, 2024 | Not reported |
| Industry KEV feed | Nov 7, 2024 | Dec 3, 2024 | Not reported |
| CIRCL KEV | Nov 12, 2024 | Dec 3, 2024 | Not reported |
| ENISA EUVD | Nov 12, 2024 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Adaptive Security Appliance SoftwareCisco | See advisory | n/a |
Timeline
Publicly disclosed
Mar 18, 2014
Added to Industry KEV feed
Nov 7, 2024
Added to CISA KEV
Nov 12, 2024
Added to CIRCL KEV
Nov 12, 2024
Added to ENISA EUVD
Nov 12, 2024
Last updated
Apr 21, 2026
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- advisory20140318 Cisco Adaptive Security Appliance WebVPN Login Page Cross-Site Scripting Vulnerability
- advisory66290
- advisory1029935
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
Cross-site scripting (XSS) vulnerability in the WebVPN login page in Cisco Adaptive Security Appliance (ASA) Software allows remote attackers to inject arbitrary web script or HTML via an unspecified parameter, aka Bug ID CSCun19025.
Affected: Adaptive Security Appliance Software (Cisco). The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 7, 2024.
Yes. It was added on Nov 12, 2024 with a federal remediation due date of Dec 3, 2024.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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