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No exploitation reported

CVE-2025-27752

No exploitation reported by the sources we read.

  • Published2025-04-08
  • WeaknessCWE-122

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Timeline

dates in UTC
  1. 2025-04-0818:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-27752?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-27752?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Microsoft office
BranchAffectedFixed in
2016.x= 2016no fix published
2019.x= 2019no fix published
Microsoft office long term servicing channel
BranchAffectedFixed in
2021.x= 2021no fix published
2024.x= 2024no fix published
Microsoft 365 apps
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionnone2025-04-08
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.17.8read 2026-10-23
  • CNAweakness (CWE)CWE-122read 2026-10-23
  • FIRST EPSSEPSS score1.0 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2025-04-08
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is CVE-2025-27752?

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Is CVE-2025-27752 actively exploited?

Active exploitation of CVE-2025-27752 has not been confirmed. Its EPSS score was 1.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-27752?

CVE-2025-27752 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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