CVE-2025-21259

Description

References

• msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21259 · Patch

More vulnerabilities in outlook

• CVE-2026-80073MEDIUM 6.5Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.
• CVE-2026-78519HIGH 8.8Use of uninitialized resource in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
• CVE-2026-69629HIGH 8.8Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
• CVE-2026-70329HIGH 8.8Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
• CVE-2026-62882MEDIUM 4.3Insufficiently protected credentials in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.