---
title: "CVE-2014-2120: Cisco Adaptive Security Appliance (ASA) Cross-Site Scripting (XSS) Vulnerability"
url: https://erroneo.us/security/cve/CVE-2014-2120/
description: "CVE-2014-2120 (Cisco Adaptive Security Appliance (ASA)): Exploited in the wild (CISA KEV). Cross-site scripting (XSS) vulnerability in the WebVPN login page…"
type: vulnerability-record
section: "Security Digest"
date_published: 2014-03-19
date_modified: 2025-10-22
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2014-2120"
kev: true
cvss: 5.4
epss: 0.22558
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2014-2120: Cisco Adaptive Security Appliance (ASA) Cross-Site Scripting (XSS) Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Cisco Adaptive Security Appliance (ASA). CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-11-12, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-12-03 ; treat that as the outer limit, not the target.
- EPSS 22.6% , percentile 98: FIRST’s model estimates a 22.6% chance of exploitation activity in the next 30 days, higher than 98% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.

## What it is

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 products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 5.4 `CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`

## Exploitation

- CISA KEV: added 2024-11-12; federal due date 2024-12-03. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 22.56% probability of exploitation activity in the next 30 days; percentile 98.

## Sources

- [20140318 Cisco Adaptive Security Appliance WebVPN Login Page Cross-Site Scripting Vulnerability](http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-2120)
- [Listed in CISA KEV notes (sec.cloudapps.cisco.com)](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-CVE-2014-2120)
- [CVE.org record CVE-2014-2120](https://www.cve.org/CVERecord?id=CVE-2014-2120)
- [NVD entry CVE-2014-2120](https://nvd.nist.gov/vuln/detail/CVE-2014-2120)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-2120)
- [1029935](http://www.securitytracker.com/id/1029935)
- [66290](http://www.securityfocus.com/bid/66290)

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Source page: https://erroneo.us/security/cve/CVE-2014-2120/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt