CVE-2026-55123
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
A heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.
Risk Assessment
An attacker can gain full control of the victim's system, leading to data theft, malware installation, or further propagation within the network.
Recommendation
Apply the security update provided by Microsoft for PowerPoint immediately and consider implementing policies that restrict the execution of macros and attachments from unknown sources.
Other vulnerabilities in Microsoft Office PowerPoint
See all- CVE-2026-88207High
Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
- CVE-2026-88144High
A use after free vulnerability in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
- CVE-2026-70215High
Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
- CVE-2026-41102High
Improper access control in Microsoft Office PowerPoint allows an authorized attacker to perform spoofing locally.
- CVE-2026-88178Critical
Use-after-free vulnerability in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
- CVE-2026-80086Medium
Out-of-bounds read in Microsoft Office PowerPoint. An unauthorized attacker can disclose information over a network.
- CVE-2026-80081High
Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
- CVE-2026-78513Medium
An out-of-bounds read vulnerability in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
- CVE-2026-72977Medium
An out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.
- CVE-2026-72975Medium
An out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.
Original NVD description (English source)
Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS