CVE-2026-58542: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 Version 24H2
Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58542) involves a heap-based buffer overflow in Windows Media on Windows 11 Version 24H2 (build 10.0.26100.0). It enables an unauthorized attacker to execute code locally, potentially leading to full compromise of the affected system. The CVSS 3.1 base score is 7.8, reflecting high severity with attack vector local, low attack complexity, no privileges required, but user interaction needed. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows local attackers to execute arbitrary code, resulting in complete compromise of confidentiality, integrity, and availability of the affected system. This can lead to unauthorized control over the system and potential disruption of services or data loss.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58542 to remediate this vulnerability.
CVE-2026-58542: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 Version 24H2
Description
Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-58542) involves a heap-based buffer overflow in Windows Media on Windows 11 Version 24H2 (build 10.0.26100.0). It enables an unauthorized attacker to execute code locally, potentially leading to full compromise of the affected system. The CVSS 3.1 base score is 7.8, reflecting high severity with attack vector local, low attack complexity, no privileges required, but user interaction needed. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows local attackers to execute arbitrary code, resulting in complete compromise of confidentiality, integrity, and availability of the affected system. This can lead to unauthorized control over the system and potential disruption of services or data loss.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58542 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T04:33:41.870Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58542","vendor":"Microsoft"}]
Threat ID: 6a5676c268715ace43f0b191
Added to database: 07/14/2026, 17:49:54 UTC
Last enriched: 08/13/2026, 16:03:49 UTC
Last updated: 08/28/2026, 22:52:12 UTC
Views: 62
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.