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-2026-41102High
Improper access control in Microsoft Office PowerPoint allows an authorized attacker to perform spoofing locally.
- CVE-2026-70325Medium
Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
- CVE-2026-70322Medium
Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
- CVE-2026-70320Medium
Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
- CVE-2026-70316Medium
Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
- CVE-2026-70313High
An improper input validation vulnerability in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
- CVE-2026-70312Medium
Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
- CVE-2026-68809Medium
Incomplete cleanup in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
- CVE-2026-55120High
A heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.
- CVE-2026-55043High
A heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.
Original NVD description (English source)
Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.