vulnerability

CVE-2014-2120

6.1

Medium

KEV · Exploited in wildEPSS 23%Patch available

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.

exploited

Yes, in CISA KEV since 12 Nov 2024fix by 3 Dec 2024 (CISA deadline for US federal agencies)

fix

Patch available see the advisory in the references

likelihood

EPSS 22.6%

Published 19 Mar 2014Analysed here 2 Nov 2026

do firstApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

triage

client-sideruntimeWAF can block: yesAV · networkCWE-79· Cross-Site Scripting (XSS)

Can a WAF block it? Yes. Cross-site scripting sends script tags or event handlers in the request, which WAF signatures match well.

Also consider: CSP · output encoding

Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.

cvss vector

attack vectornetworkattack complexitylowprivileges requirednoneuser interactionrequiredscopechangedconfidentialitylowintegritylowavailabilitynone

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

common questions

Is CVE-2014-2120 being exploited?

Yes. CVE-2014-2120 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.

How severe is CVE-2014-2120?

CVE-2014-2120 is rated Medium with a CVSS score of 6.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2014-2120?

Yes. A fix has been recorded for CVE-2014-2120. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2014-2120 affect?

CVE-2014-2120 affects cisco:adaptive_security_appliance_software. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary

technical analysis

affected

cisco:adaptive_security_appliance_software

cisa ssvc

exploitation: active
automatable: no
technical impact: total

Assessed by CISA 20 Aug 2025 (SSVC 2.0.3).

timeline

19 Mar 2014Published
12 Nov 2024Added to CISA KEV (exploited in the wild) · 3,891 days (about 11 years) later
3 Dec 2024CISA remediation due date (US federal agencies) · 21 days later
20 Aug 2025CISA SSVC assessment: exploitation active · 260 days (about 9 months) later
22 Oct 2025CVE record last updated · 63 days (about 2 months) later
2 Nov 2026Analysed by vulneraibility.com · 377 days (about 1 year) later

how to fix

Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.

references

NVD CVE.org CVE Details Source

4 references in the CVE record: 1 advisory, 3 links

Advisorytools.cisco.com /security/center/content/CiscoSecurityNotice/CVE-2014-2120
Linksecuritytracker.com /id/1029935
Linksecurityfocus.com /bid/66290
Linkcisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-2120

sources

CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
NVD: CVSS and CPE data
CISA KEV catalog: exploitation, date added, due date
CISA Vulnrichment (ADP): SSVC decision points
FIRST EPSS: exploit probability and percentile
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.

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