CVE-2026-88218
A NVD · · CVE-2026-88218
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
- 9.8
- EPSS
- 0%
Key insight
The item is a bare NVD record and provides no information beyond the patch data regarding exploitation status, PoC availability, or attacker TTPs.
Description
CVE-2026-88218 describes a double-free flaw in the Windows DNS service that may allow an unauthenticated attacker to execute code over the network. Affected are Windows systems running the DNS Server service, typically domain controllers and DNS roles in Active Directory environments. The entry originates from the NVD and contains no information on whether the vulnerability is actively exploited, whether a proof of concept is publicly available, or whether it has been added to the CISA KEV list. Details on attack vectors beyond network reachability and on specific impacts to confidentiality, integrity, and availability are not specified. Without confirmed exploitation, the assessment currently remains limited to the technical vulnerability.
Risk score
- cvss base
- 98.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 98.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- 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