CVE-2026-122171
A NVD · · CVE-2026-122171
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 report only describes a vulnerability in Microsoft XPS Document Converter; there is no information on active exploitation, affected sectors, or attacker TTPs.
Description
CVE-2026-122171 is a heap-based buffer overflow in the Microsoft XPS Document Converter. An unauthenticated attacker can exploit the vulnerability over the network to execute arbitrary code. Systems with the Microsoft XPS Document Converter are affected; the NVD description does not provide further details on affected versions or CVSS scores. There is no indication of active exploitation or inclusion in CISA KEV. The report does not mention an exploit or proof of concept.
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