Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
Review the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.
CVE-2026-54998 is listed in the HOL Guard supply-chain feed, but affected software is not mapped to a package. Review the upstream advisory for the affected product and vendor guidance. Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.
Reported by NVD (nvd).
Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
Review the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.
CVE-2026-54998 is listed in the HOL Guard supply-chain feed, but affected software is not mapped to a package. Review the upstream advisory for the affected product and vendor guidance. Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.
Reported by NVD (nvd).
HOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.
Explore HOL GuardHOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.
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