Answer in brief
CVE-2026-50522 records a Critical severity (CVSS 9.8) deserialization vulnerability in Microsoft SharePoint Deserialization of Untrusted Data Vulnerability. The source record marks it as known exploited. No package mapping is present, so exposure must be confirmed against the affected product and deployment inventory.
Answer in brief
CVE-2026-50522 records a Critical severity (CVSS 9.8) deserialization vulnerability in Microsoft SharePoint Deserialization of Untrusted Data Vulnerability. The source record marks it as known exploited. No package mapping is present, so exposure must be confirmed against the affected product and deployment inventory.
Review the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.
Deserialization describes the vulnerability class recorded for this advisory. NVD marks CVE-2026-50522 as known exploited, so exposure review should be prioritized. This is a product-level record in the current feed, not a package-level dependency mapping.
Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.
Microsoft SharePoint contains a deserialization of untrusted data vulnerability which could allow an unauthorized attacker to execute code over a network.
Reported by NVD (nvd).
CVE-2026-50522 records a Critical severity (CVSS 9.8) deserialization vulnerability in Microsoft SharePoint Deserialization of Untrusted Data Vulnerability. The source record marks it as known exploited. No package mapping is present, so exposure must be confirmed against the affected product and deployment inventory.
The source record marks it as known exploited.
Confirm whether the product or interface named by this advisory exists in your inventory.
HOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.
Explore HOL GuardReview the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.
Deserialization describes the vulnerability class recorded for this advisory. NVD marks CVE-2026-50522 as known exploited, so exposure review should be prioritized. This is a product-level record in the current feed, not a package-level dependency mapping.
Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.
Microsoft SharePoint contains a deserialization of untrusted data vulnerability which could allow an unauthorized attacker to execute code over a network.
Reported by NVD (nvd).
CVE-2026-50522 records a Critical severity (CVSS 9.8) deserialization vulnerability in Microsoft SharePoint Deserialization of Untrusted Data Vulnerability. The source record marks it as known exploited. No package mapping is present, so exposure must be confirmed against the affected product and deployment inventory.
The source record marks it as known exploited.
Confirm whether the product or interface named by this advisory exists in your inventory.
HOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.
Explore HOL Guard