Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.
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This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 2.7%, top 14% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.
January 13, 2026
February 5, 2026
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| azure-core | 1.0.0 ... 1.9.0 (74 versions) | 1.38.0 | — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
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msrc
CWE-502