CVE-2026-123385
A NVD · · CVE-2026-123385
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 metrics
- CVSS
- 8.8
- EPSS
- 0%
Key insight
The NVD entry contains no indication of active exploitation, targeted sectors, or attacker TTPs and does not go beyond the CVE and patch information.
Description
CVE-2026-123385 is a stack-based buffer overflow vulnerability in Microsoft Office Excel. An unauthenticated attacker can exploit it over the network to execute code. Vulnerable versions of Microsoft Office Excel are affected. At the time of the NVD entry, there is no information on active exploitation, proof-of-concept code, or CISA KEV inclusion.
Risk score
- cvss base
- 88.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 88.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational