CVE-2021-22825Network attack vector

Privilege escalation via malicious URL token compromise

Published Jan 28, 2022 · Updated Sep 8, 2025

Cross-site scripting in affected Schneider Electric Rack PDU NMC2 and NMC3 firmware allows attackers to gain elevated access. A crafted malicious URL causes the management interface to expose a privileged account's security token when that account follows the link. Exploitation requires low-privilege access and privileged-user interaction; affected ranges are NMC2 6.9.6 and earlier, AP7xxx and AP8xxx NMC3 1.1.0.3 and earlier, and APDU9xxx NMC3 1.0.0.28 and earlier.

CVSS severity8.0
High
EPSS probability0.77%
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 Schneider Electric Rack PDU NMC2 and NMC3 firmware allows attackers to gain elevated access. A crafted malicious URL causes the management interface to expose a privileged account's security token when that account follows the link. Exploitation requires low-privilege access and privileged-user interaction; affected ranges are NMC2 6.9.6 and earlier, AP7xxx and AP8xxx NMC3 1.1.0.3 and earlier, and APDU9xxx NMC3 1.0.0.28 and earlier.

The record

CVE
CVE-2021-22825
Published
Jan 28, 2022
Updated
Sep 8, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200, T1539, T1566.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2025Record 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.0NVDAV:N/AC:M/Au:S/C:P/I:P/A:P
8.0NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

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-200Exposure of Sensitive Information to an Unauthorized Actor
T1539Steal Web Session Cookie
T1566.002Spearphishing Link

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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