CVE-2021-41318Public exploitNetwork attack vector

Stored script execution via unsanitized SNMP fields

Published Sep 28, 2021 · Updated Aug 4, 2024

Stored cross-site scripting in Progress WhatsUp Gold before 21.1.0 allows remote attackers to execute script in a victim's browser. The discovery path stores unsanitized SNMP sysName, sysLocation, or sysContact values and renders them in the web console without neutralizing embedded HTML or JavaScript. The attacker needs an SNMP device reachable by the server, and an authenticated console user must view the discovered data; the script runs in that user's session and can create an administrator account.

CVSS severity6.1
Medium
EPSS probability5.88%
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 Progress WhatsUp Gold before 21.1.0 allows remote attackers to execute script in a victim's browser. The discovery path stores unsanitized SNMP sysName, sysLocation, or sysContact values and renders them in the web console without neutralizing embedded HTML or JavaScript. The attacker needs an SNMP device reachable by the server, and an authenticated console user must view the discovered data; the script runs in that user's session and can create an administrator account.

The record

CVE
CVE-2021-41318
Published
Sep 28, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 28, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NVDAV:N/AC:M/Au:N/C:N/I:P/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

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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