Security readout for executives and security teams
Plain-English summary
A type-confusion flaw in Microsoft Edge can allow an unauthenticated remote attacker to run code after a user interacts with malicious content. Successful exploitation could compromise data, alter systems, or disrupt affected devices. The CVSS score is 8.8, making prompt remediation appropriate.
Executive priority
Treat as a high-priority browser update. Set a short remediation deadline, verify deployment coverage, and escalate devices that cannot update. There is no supplied evidence of active exploitation, so emergency incident response is not justified solely by this record.
Technical view
CVE-2025-25000 is a CWE-843 type-confusion vulnerability in Chromium-based Microsoft Edge. It is remotely reachable, requires low attack complexity and no privileges, but requires user interaction. Successful exploitation can affect confidentiality, integrity, and availability. The supplied version data is insufficient to define the affected range reliably.
Likely exposure
Endpoints running Chromium-based Microsoft Edge may be exposed when users browse untrusted or attacker-controlled content. The source bundle lists version 1.0.0.0, but this does not establish a dependable affected-version range. Confirm exposure using Microsoft’s advisory and endpoint inventory.
Exploitation context
The supplied sources do not establish active exploitation, and the CVE is not identified as being in CISA KEV. CVSS records exploit maturity as unproven. User interaction is required, but no authentication or existing privileges are needed.
Researcher notes
The record describes incompatible-type resource access leading to remote code execution. CVSS 3.1 is 8.8: network-accessible, low complexity, no privileges, user interaction required, unchanged scope, and high impact. The bundle does not identify the affected component, trigger conditions, fixed release, proof of concept, or observed attacks.
Mitigation direction
- Review Microsoft’s CVE advisory for affected and fixed Edge versions.
- Apply the Microsoft-provided Edge security update across affected endpoints.
- Prioritize internet-facing user workstations and devices handling sensitive information.
- Use managed browser-update policies to reduce unpatched exposure windows.
Validation and detection
- Inventory installed Microsoft Edge versions across managed endpoints.
- Compare installed versions with Microsoft’s current advisory guidance.
- Verify successful update deployment and investigate failed or stale clients.
- Confirm browser-update policies cannot be disabled by standard users.
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-843: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-25000 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:N/UI:R/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:N/UI:R/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:N/UI:R/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 Edge (Chromium-based) Remote Code Execution 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.
Access of Resource Using Incompatible Type ('Type Confusion')
Access of Resource Using Incompatible Type ('Type Confusion') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.