CVE-2025-21355

Published Feb 19, 2025

Last updated a year ago

Overview

Description: Missing Authentication for Critical Function in Microsoft Bing allows an unauthorized attacker to execute code over a network
Source: secure@microsoft.com
NVD status: Analyzed
CNA Tags: exclusively-hosted-service
Products: bing

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

secure@microsoft.com: CWE-306
nvd@nist.gov: NVD-CWE-noinfo

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:microsoft:bing:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "6F86F428-9E67-4F94-9FF4-8DB47B64ACCE",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.