TLS 1.3 CompressedCertificate excessive memory allocation
Description
CVE-2025-66199 is a vulnerability in Microsoft software version 3.0 involving excessive memory allocation triggered by the TLS 1.3 CompressedCertificate feature. This flaw relates to improper handling of memory resources during TLS certificate compression, potentially leading to resource exhaustion. No CVSS score or detailed impact metrics are provided. No patch or remediation details are currently available.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2025-66199 affects Microsoft product version 3.0 and involves excessive memory allocation caused by the TLS 1.3 CompressedCertificate feature. This issue is categorized under CWE-789 (Uncontrolled Memory Allocation). The vulnerability could lead to excessive consumption of memory resources when processing compressed certificates in TLS 1.3, which may impact system stability or availability. There is no CVSS score or vendor advisory specifying exploitation or patch status.
Potential Impact
The vulnerability may cause excessive memory allocation during TLS 1.3 certificate processing, potentially leading to denial of service or system instability. There is no evidence of known exploits in the wild. The exact impact severity is not quantified due to lack of CVSS or detailed vendor information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is currently available. Monitor Microsoft Security Response Center advisories for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2025-66199
- Cve Count
- 1
Threat ID: 6acc00d52cdf04f656feeaf3
Added to database: 10/11/2026, 21:34:13 UTC
Last enriched: 10/11/2026, 21:56:05 UTC
Last updated: 10/11/2026, 23:28:22 UTC
Views: 2
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