Office Developer Platform Security Feature Bypass Vulnerability

published 2025-07-08 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-20617

cvss: 3.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits: 0; none known

Use of a broken or risky cryptographic algorithm in Office Developer Platform allows an authorized attacker to bypass a security feature locally.

Patch / fix

links 1

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49756 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 16 mo ago (2025-07-09)

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.3	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C
CNA	3.1	3.3	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

Affected products

Microsoft Microsoft 365 Apps for Enterprise

Classification

Weakness

CWE-327 Use of a Broken or Risky Cryptographic Algorithm

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2025-49756
vendor-advisory, patch

Sources

CVE List CVE-2025-49756
NVD CVE-2025-49756

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary