CVE-2025-62557: microsoft 365_apps Use After Free
CVSS: 8.4v3.1HighAnalyzed
Published 09-12-2025Last modified 16-04-2026
Vulnerability summary
CVE-2025-62557 is a high (CVSS 8.4) Use After Free vulnerability in microsoft 365_apps. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 35.4% of scored vulnerabilities.
CVSS score
8.4/10
010
High · v3.1 (CVE.org)EPSS score
0.43%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 09-12-2025PublishedVulnerability first disclosed.
- 16-04-2026Last modifiedVulnerability information updated.
Description
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 8.4Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CSources2 sources · 7.8–8.4
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.43%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
0.00 pp
From 0.43% on 19-09-2026
19-09-202619-10-2026
EPSS score0.43%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft12 products
- 365_appsna
- 365_copilotna
- microsoft 365 apps for enterprise≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases
- microsoft office 2016≥ 16.0.0, < 16.0.5530.1001
- microsoft office 2019≥ 19.0.0, < https://aka.ms/OfficeSecurityReleases
1 vendor · 12 products
