How severe is CVE-2014-2120?

CVE-2014-2120 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which products are affected by CVE-2014-2120?

CVE-2014-2120 affects the following products: cisco adaptive security appliance software.

How do I patch CVE-2014-2120?

No patch has shipped for CVE-2014-2120 yet — track the cisco adaptive security appliance software advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2014-2120 across my infrastructure?

Inventory every cisco adaptive security appliance software deployment and check each version against the affected-products list above.

How do I mitigate CVE-2014-2120 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Is CVE-2014-2120 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2014-2120, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2014-2120?

CVE-2014-2120 has an EPSS (Exploit Prediction Scoring System) score of 22.6%, placing it in the 98th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

Is CVE-2014-2120 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2014-2120 (Cisco Adaptive Security Appliance (ASA) Cross-Site Scripting (XSS) Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2024-11-12. CISA required all US federal civilian agencies to remediate this vulnerability by 2024-12-03. The required action was: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2014-2120?

CVE-2014-2120 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2014-2120?

CVE-2014-2120 affects cisco adaptive security appliance software. Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2014-2120 published, and has it been updated?

CVE-2014-2120 was published on March 19, 2014 and was last updated on June 17, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🛡️

CISA KEV · ACTIVELY EXPLOITED

MEDIUM severity

CVE-2014-2120 — Adaptive Security Appliance Software

MEDIUM

CVE-2014-2120 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in cisco adaptive security appliance software. It is in CISA's Known Exploited Vulnerabilities catalog (added 2024-11-12) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

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…

Published

Mar 19, 2014

Updated

Jun 17, 2026

Affected

1 product

Patched

See advisory

Exploits

1 known

Exploitation data as of Oct 23, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2024-11-12. Federal agencies were required to remediate by 2024-12-03.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2014-2120.

EPSS Exploitation Probability

via FIRST.org ↗

22.6%probability of exploitation in next 30 days

Moderate Risk0.00%

Lower risk than most CVEs98th percentile — riskier than 98% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2014-2120 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

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.

Affected Products

1 product · 1 configurations

adaptive security appliance softwarecisco

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Cross-site scripting (XSS) vulnerability in the WebVPN login page in Cis…

cisa.govCISANov 2024

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every cisco adaptive security appliance software deployment and check each version against the affected-products list above.
Remediation status
No patch has shipped for CVE-2014-2120 yet — track the cisco adaptive security appliance software advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

O3 Security · Runtime Protection

Is CVE-2014-2120 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

Protect my workloads How runtime protection works

CVSS Score

6.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No known public exploit tooling found.

Timeline

Disclosed

Mar 19, 2014

KEV added

Nov 12, 2024

First exploit

Nov 12, 2024

Last updated

Jun 17, 2026

Identifiers

CVE-2014-2120

References

Advisorytools.cisco.com Advisorysecurityfocus.com Advisorysecuritytracker.com Advisorytools.cisco.com Advisorysecurityfocus.com Advisorysecuritytracker.com Webcisa.gov

Related vulnerabilities

This CVE is medium severity; 4 of 8 other CVEs with CWE-79 are rated as high or higher (top: critical).

CVE-2026-114061GHSA-2rqm-h6hv-g79vCVE-2026-115897CVE-2026-114128CVE-2026-63430GHSA-c6gr-qvv4-5v3fGHSA-cg2g-xh64-v4q7CVE-2026-114130Browse all CWE-79

Provenance

Sources

OSV.devNVDCISA KEVFIRST.org (EPSS)

Last verifiedJun 17, 2026