Security readout for executives and security teams
Plain-English summary
This vulnerability affects specified Schneider Electric APC rack power devices and Network Management Card firmware. If a privileged user clicks a malicious URL, an attacker could compromise a security token and gain elevated access. That creates a meaningful risk to power-management infrastructure if admin interfaces are reachable and privileged users are exposed to phishing or unsafe links.
Executive priority
Prioritize remediation for production power-distribution or UPS management devices, especially if reachable from broad internal networks. The vulnerability can enable elevated access after user interaction, so urgency is high, but evidence of active exploitation is not provided.
Technical view
CVE-2021-22825 is CWE-200 sensitive information exposure with CVSS 3.1 score 8.0. The vector is network-accessible, low complexity, low privileges required, and user interaction required. Impact is high for confidentiality, integrity, and availability. Affected versions include AP7xxxx/AP8xxx with NMC2 6.9.6 or earlier, NMC3 1.1.0.3 or earlier, and APDU9xxx with NMC3 1.0.0.28 or earlier.
Likely exposure
Exposure is most likely where affected APC AP7xxx, AP8xxx, or APDU9xxx devices are managed over reachable networks and privileged administrators use vulnerable NMC firmware. Internet exposure is not stated in the sources and should be verified locally.
Exploitation context
The provided sources describe a malicious-URL scenario requiring a privileged account to click a link. The bundle does not identify active exploitation, public exploit availability, or CISA KEV listing. Treat exploitation evidence as incomplete unless vendor or threat-intelligence sources say otherwise.
Researcher notes
The CNA data lists affected product families but the bundled affected array is generic. Rely on Schneider Electric advisory details for exact product and firmware handling. Avoid assuming exploit status or fixes beyond the advisory.
Mitigation direction
- Inventory affected APC AP7xxx, AP8xxx, and APDU9xxx deployments.
- Check Schneider Electric advisory SEVD-2021-348-04 for approved firmware or mitigation guidance.
- Restrict management interfaces to trusted administrative networks.
- Reduce privileged browsing and email exposure for device administrators.
- Review privileged account sessions if token compromise is suspected.
Validation and detection
- Confirm device model, NMC generation, and firmware version.
- Compare versions against the affected thresholds in the CVE description.
- Verify management interfaces are not broadly reachable.
- Review logs for unexpected privileged access or configuration changes.
- Document remediation status for each affected device.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-22825 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H2.15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-348-04CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.