Security readout for executives and security teams
Plain-English summary
A flaw in Microsoft Windows RRAS could let an unauthorized network attacker expose sensitive memory contents. Successful exploitation requires user interaction, but no credentials and low attack complexity. It affects multiple listed Windows client and server releases and does not enable data modification or service disruption according to the supplied CVSS assessment.
Executive priority
Treat this as a moderate confidentiality risk. Patch internet-facing or otherwise untrusted-network-accessible RRAS systems first, then address internal deployments through the normal security-update cycle. Escalate priority where exposed memory could contain sensitive business, identity, or operational data.
Technical view
CVE-2025-26672 is a CWE-126 buffer over-read in Windows Routing and Remote Access Service. Its CVSS 3.1 score is 6.5: network-accessible, low complexity, no privileges, and user interaction required. The assessed impact is high confidentiality loss with no integrity or availability impact.
Likely exposure
Exposure is most plausible on listed affected Windows systems that run RRAS and permit untrusted network access to it. Actual risk depends on RRAS deployment, network reachability, user-interaction conditions, and update status. The supplied sources do not identify the exposed data or clarify every exploitation prerequisite.
Exploitation context
The supplied record does not establish active exploitation, and the CVE is not identified as CISA KEV. The CVSS vector reports network access, low complexity, no required privileges, and required user interaction. No exploit procedure or observed campaign is documented in the provided sources.
Researcher notes
The record supports a buffer over-read and high confidentiality impact, but does not specify the protocol path, disclosed memory contents, interaction mechanism, or reliable detection indicators. Validate exposure through configuration, reachability, affected-build, and patch-state evidence rather than assuming every listed Windows host is exploitable.
Mitigation direction
- Review the MSRC advisory and apply the applicable Microsoft security update to each affected system.
- Prioritize affected RRAS hosts reachable from untrusted networks.
- Restrict RRAS network access to trusted sources while remediation is pending.
- Consider disabling unnecessary RRAS deployments after confirming operational impact.
Validation and detection
- Inventory listed Windows versions and identify systems running RRAS.
- Compare installed security updates with the remediation specified by Microsoft.
- Verify whether untrusted networks can reach each RRAS deployment.
- Recheck the MSRC advisory for revised affected-version or remediation information.
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-126: 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 lookupCVE-2025-26672 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/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:N/A:N/E:U/RL:O/RC:C2.83.6microsoftVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/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
- Windows Routing and Remote Access Service (RRAS) 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.
Buffer Over-read
Buffer Over-read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.