CVE-2021-1458Network attack vector

Browser script execution via crafted management links

Published Apr 29, 2021 · Updated Nov 8, 2024

Cross-site scripting in affected Cisco Firepower Management Center releases allows remote attackers to execute browser scripts via crafted links. Cisco has not disclosed the affected parameters or handlers; the web interface insufficiently validates link-supplied input before returning it to a user’s browser. Exploitation requires an interface user to click the crafted link and exposes browser-based information or actions in that interface context.

CVSS severity4.8
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in affected Cisco Firepower Management Center releases allows remote attackers to execute browser scripts via crafted links. Cisco has not disclosed the affected parameters or handlers; the web interface insufficiently validates link-supplied input before returning it to a user’s browser. Exploitation requires an interface user to click the crafted link and exposes browser-based information or actions in that interface context.

The record

CVE
CVE-2021-1458
Published
Apr 29, 2021
Updated
Nov 8, 2024
Vendor
ClamAV
Product
Cisco Firepower Management Center
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 8, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Firepower Management Centerversion=n/a

Published CVSS scores

4.8CiscoCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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