Security readout for executives and security teams
Plain-English summary
This is a high-severity Microsoft Windows remote code execution issue in Pragmatic General Multicast. Successful exploitation could let an unauthenticated network attacker compromise confidentiality, integrity, and availability. The CVSS details show high attack complexity, so it is serious but not automatically urgent without exposure evidence.
Executive priority
Patch through the normal high-severity Windows update process, with accelerated handling for exposed servers and critical business systems. Escalate only if your inventory shows reachable PGM exposure or if later sources confirm exploitation.
Technical view
CVE-2023-35297 is a Windows PGM remote code execution vulnerability associated with CWE-843, type confusion. The CVSS 3.1 score is 8.1 with network attack vector, no privileges, no user interaction, high complexity, and high impact across confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to Microsoft Windows versions listed by MSRC, including affected Windows 10, Windows 11, and Windows Server releases from 2008 through 2022. Prioritize systems where Windows PGM functionality is present or reachable over networks.
Exploitation context
The provided sources do not show active exploitation. The CVSS exploit code maturity is unproven, and the CVE is not marked as CISA KEV in the bundle. Treat exploitation as plausible, but not confirmed from these sources.
Researcher notes
The source bundle is thin beyond MSRC metadata. Key facts are RCE, CWE-843, CVSS 8.1, high complexity, unauthenticated network vector, official fix available, and no KEV signal. Avoid assuming exploitability conditions beyond Microsoft’s advisory.
Mitigation direction
- Apply Microsoft’s official remediation from the MSRC advisory.
- Prioritize internet-facing, DMZ, and high-trust Windows servers first.
- Check vendor guidance before changing PGM-dependent services.
- Track Microsoft updates for affected Windows versions in your estate.
- Monitor CISA KEV and vendor advisories for exploitation changes.
Validation and detection
- Inventory Windows versions against the MSRC affected product list.
- Confirm whether affected hosts have received Microsoft’s fix.
- Identify systems where PGM-related functionality is installed or reachable.
- Validate compensating controls for exposed or unpatched systems.
- Document remaining exceptions and business owners.
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-2023-35297 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
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/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.
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:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C2.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows Pragmatic General Multicast (PGM) Remote Code Execution VulnerabilityCVE reference · vendor-advisory
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.