Disclosure summary
python-ecdsa: Denial of Service via improper DER length validation in crafted private keys
Source-reported weakness categories
CWE-20
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Mar
Open original source · Updated Sep 24, 2026
python-ecdsa: Denial of Service via improper DER length validation in crafted private keys
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 5.3
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | cbl2 python-ecdsa 0.17.0-1 on CBL-Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 python-ecdsa 0.18.0-2 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 python-ecdsa 0.17.0-1 on CBL Mariner 2.0 | (MSRC status code 3) |
Vendor remediation references
- Release Notes · product IDs 19938-21692
- Vendor guidance · product IDs 19938-21692
- CBL-Mariner Releases · build 0.19.2-1 · product IDs 19941-17084
- Vendor guidance · product IDs 19941-17084
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-03-28T21:01:47-04:00
MODIFIED 2026-09-24T22:15:23-04:00
INGESTED 2026-10-08T12:45:09-04:00