CVE-2023-25494

Status: DeferredMedium (6.7)—

A potential vulnerability were reported in the BIOS of some Desktop, Smart Edge, and ThinkStation products that could allow a local attacker with elevated privileges to write to NVRAM variables.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Base score: 6.7

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.18%
Percentile among all scored CVEs: 7
Score date: 10/6/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Lenovo — Bios^AI Lenovo — Smart Edge^AI Lenovo — Thinkstation^AI

CWEs

CWE-125

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2023-25494",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-25494",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-04-08T16:18:23.073422Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@lenovo.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 0.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@lenovo.com",
      "affectedData": [
        {
          "vendor": "Lenovo",
          "product": "Desktop BIOS, Smart Edge BIOS, ThinkStation BIOS",
          "versions": [
            {
              "status": "affected",
              "version": "various"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2024-04-05T21:15:07.813",
  "references": [
    {
      "url": "https://support.lenovo.com/us/en/product_security/LEN-141775",
      "source": "psirt@lenovo.com"
    },
    {
      "url": "https://support.lenovo.com/us/en/product_security/LEN-141775",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@lenovo.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "\nA potential vulnerability were reported in the BIOS of some Desktop, Smart Edge, and ThinkStation products that could allow a local attacker with elevated privileges to write to NVRAM variables. \n\n"
    },
    {
      "lang": "es",
      "value": "Se informó una vulnerabilidad potencial en el BIOS de algunos productos de escritorio, Smart Edge y ThinkStation que podría permitir que un atacante local con privilegios elevados escriba en variables NVRAM."
    }
  ],
  "lastModified": "2026-06-17T05:41:21.463",
  "sourceIdentifier": "psirt@lenovo.com"
}