CVE-2026-118297
A NVD · · CVE-2026-118297
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 only describes the vulnerability; there is no information on active exploitation, affected sectors, or TTPs.
Description
The entry describes a heap-based buffer overflow vulnerability in Microsoft Office Excel. An unauthorized attacker can execute code over the network through it. The entry does not provide information on affected Excel versions, CVSS score, or exploitation status. There is no indication of active exploitation, a proof of concept, or 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
MITRE ATT&CK mapping
1 TTPProcedure details
| Technique | Tactic | Procedure | Conf. | Source |
|---|---|---|---|---|
| T1203 Exploitation for Client Execution | Execution | An attacker exploits a heap-based buffer overflow in Microsoft Office Excel to execute arbitrary code, likely by convincing a user to open a specially crafted Excel file. | high | llm |