CVE-2021-34789Network attack vector

Stored script execution via insufficient input validation

Published Oct 21, 2021 · Updated Nov 7, 2024

Stored cross-site scripting in Cisco Secure Workload before 3.5.1.31 allows remote authenticated users to execute script via its web management interface. The interface insufficiently validates user-supplied input on specific pages, allowing injected code to persist and run in an administrator's browser context. Administrative credentials are required, and successful exploitation can expose browser-based information or alter actions available to that interface.

CVSS severity4.8
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Cisco Secure Workload before 3.5.1.31 allows remote authenticated users to execute script via its web management interface. The interface insufficiently validates user-supplied input on specific pages, allowing injected code to persist and run in an administrator's browser context. Administrative credentials are required, and successful exploitation can expose browser-based information or alter actions available to that interface.

The record

CVE
CVE-2021-34789
Published
Oct 21, 2021
Updated
Nov 7, 2024
Vendor
ClamAV
Product
Cisco Secure Workload
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 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 privilegesauthenticated

What is affected?

ClamAV · Cisco Secure Workloadversion=n/a

Published CVSS scores

4.8Cisco PSIRTCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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