Security readout for executives and security teams
Plain-English summary
CVE-2025-21385 is a high-severity Microsoft Purview SSRF issue. An authenticated attacker could use the vulnerability to disclose information over a network. The source bundle identifies Microsoft Purview as affected but does not provide affected versions, exploit details, or tenant-specific exposure criteria.
Executive priority
Prioritize this in the high-severity remediation queue for any organization using Microsoft Purview. The issue requires authorized access, but potential impact is high and Microsoft has published advisory guidance tagged for patching.
Technical view
The vulnerability is classified as CWE-918, Server-Side Request Forgery. CVSS 3.1 is 8.8 with network access, low complexity, low privileges, no user interaction, and high confidentiality, integrity, and availability impacts. Microsoft is the vendor source and the reference is tagged as a patch advisory.
Likely exposure
Organizations using Microsoft Purview should treat this as potentially relevant until Microsoft guidance confirms their status. The bundle lists no affected versions or CPEs, so exposure cannot be narrowed beyond Microsoft Purview and the requirement for authorized attacker access.
Exploitation context
No active exploitation is stated in the provided sources, and the CVE is not listed as KEV in the bundle. Exploit maturity is marked unproven in the CVSS vector. Do not assume exploitation without newer vendor, KEV, or incident evidence.
Researcher notes
Available evidence is sparse: product, CWE, CVSS vector, and Microsoft advisory are provided, but no affected versions, CPEs, exploitation details, or root-cause specifics. Validation should focus on Microsoft advisory status, asset usage, and authenticated access paths.
Mitigation direction
- Review the Microsoft MSRC advisory for CVE-2025-21385.
- Apply Microsoft’s published patch or remediation for affected Purview environments.
- Reduce Purview access to users with a clear business need.
- Review Purview role assignments for least-privilege alignment.
- Monitor Microsoft guidance for affected-version or service-status updates.
Validation and detection
- Confirm whether Microsoft Purview is used in your environment.
- Check vulnerability tools for CVE-2025-21385 detection status.
- Verify Microsoft’s advisory shows the environment as remediated.
- Review Purview access assignments for unnecessary authorized users.
- Document patch or service-remediation evidence for audit tracking.
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-918: 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 lookupCloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-21385 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
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.
SSVC decision data
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:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C2.85.9microsoftVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft Purview Information Disclosure VulnerabilityCVE reference, microsoft · vendor-advisory, patch
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.
Server-Side Request Forgery (SSRF)
Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.