Security readout for executives and security teams
Plain-English summary
CVE-2021-28350 is a Microsoft Windows GDI+ code execution vulnerability affecting many Windows desktop and server releases. A successful attack could allow code execution with serious confidentiality, integrity, and availability impact. The provided CVSS vector rates it high, but marks the attack vector as local and requiring low privileges.
Executive priority
Prioritize remediation in standard Windows patch cycles, with faster handling for shared servers and legacy endpoints. The business risk is high because successful exploitation could fully compromise affected systems, but the provided sources do not establish active exploitation.
Technical view
The vulnerability is listed as Windows GDI+ Remote Code Execution with CVSS 3.1 score 7.8. The vector is AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating low complexity, low privileges required, no user interaction, unchanged scope, and full CIA impact. Microsoft lists an official fix.
Likely exposure
Organizations running affected Windows 10, Windows Server 2016/2019/2004/20H2, Windows 7, Windows 8.1, or Windows Server 2008 systems may be exposed if relevant Microsoft fixes are missing.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. CVSS exploit maturity is marked unproven. Treat this as a high-impact patching issue, not as evidence of known in-the-wild exploitation.
Researcher notes
The source data contains broad affected CPEs and some repeated or inconsistent entries. Use Microsoft’s advisory as the authoritative product matrix. The RCE title should be interpreted alongside the CVSS vector, which identifies local access and low privileges.
Mitigation direction
- Apply Microsoft’s official fix for CVE-2021-28350 from the MSRC advisory.
- Prioritize internet-adjacent, multi-user, and legacy Windows systems for remediation.
- Move unsupported systems to a vendor-supported patch path or replacement plan.
- Do not rely on unlisted workarounds; check Microsoft guidance for any exceptions.
Validation and detection
- Inventory Windows versions against the affected product list in the advisory.
- Confirm CVE-2021-28350 remediation is installed through patch management records.
- Check legacy Windows 7 and Server 2008 assets separately for support status.
- Document any exception with compensating controls and an owner.
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.
Execution 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-2021-28350 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/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.
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28350CVE 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.