CVE-2026-55047

Description

References

• msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55047 · Vendor Advisory

More vulnerabilities in office online server

• CVE-2026-108446HIGH 8.8Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
• CVE-2026-97780HIGH 8.8Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
• CVE-2026-97779MEDIUM 6.5Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
• CVE-2026-97778HIGH 8.8Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
• CVE-2026-97777HIGH 8.8Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.