Microsoft Excel (2016), Office (2019, 2021 and 2024) and 365 Apps: Vulnerability Enables Code Execution
A BSI Warn- und Informationsdienst (WID): Schwachstellen-Informationen (Bürger Cert) ·
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key insight
BSI warns of critical code execution vulnerability in multiple Microsoft Office versions triggered by Use-After-Free, requiring immediate patches.
Description
A Use-After-Free vulnerability in Microsoft Excel 2016, Office 2019, 2021, 2024, and 365 Apps allows a remote, anonymous attacker to execute arbitrary code with the privileges of the logged-in user. The vulnerability can be triggered by opening a specially crafted Office file. Affected versions are widely deployed in enterprise environments. BSI classifies the vulnerability as critical and recommends immediate patching.
Risk score
- cvss base
- 45.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 45.00
- industry weight
- 1.21
- freshness factor
- 0.50
- exploitability factor
- 1.00
- days old
- 38.00
- vendor mismatch penalty
- 0.00
- consensus penalty
- -3.00
Path: operational
Consensus check
The pipeline self-checks before delivery. These rules lowered the score:
-
TTP_SKIPPEDTTP mapping skipped (placeholder or aggregation article) −3
- Consensus penalty:
- −3.0
- Total penalty:
- −3.0