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CVE-2022-35289

Status: ModifiedCritical (9.8)—

A write-what-where condition in hermes caused by an integer overflow, prior to commit 5b6255ae049fa4641791e47fad994e8e8c4da374 allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.

CVSS

Exploitation probability (EPSS)

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 (1)

Facebook — Hermes

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2022-35289",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve-assign@fb.com",
      "affectedData": [
        {
          "vendor": "Facebook",
          "product": "Hermes",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "prior to commit 5b6255ae049fa4641791e47fad994e8e8c4da374",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-10-11T02:15:08.787",
  "references": [
    {
      "url": "https://github.com/facebook/hermes/commit/5b6255ae049fa4641791e47fad994e8e8c4da374",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "cve-assign@fb.com"
    },
    {
      "url": "https://www.facebook.com/security/advisories/CVE-2022-35289",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve-assign@fb.com"
    },
    {
      "url": "https://github.com/facebook/hermes/commit/5b6255ae049fa4641791e47fad994e8e8c4da374",
      "tags": [
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        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.facebook.com/security/advisories/CVE-2022-35289",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve-assign@fb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-680"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A write-what-where condition in hermes caused by an integer overflow, prior to commit 5b6255ae049fa4641791e47fad994e8e8c4da374 allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected."
    },
    {
      "lang": "es",
      "value": "Una condición write-what-where en Hermes causada por un desbordamiento de enteros, versiones anteriores al commit 5b6255ae049fa4641791e47fad994e8e8c4da374 permite a atacantes ejecutar potencialmente código arbitrario por medio de JavaScript diseñado. Tenga en cuenta que esto sólo es explotable si la aplicación que usa Hermes permite la evaluación de JavaScript no confiable. Por lo tanto, la mayoría de las aplicaciones React Native no están afectadas"
    }
  ],
  "lastModified": "2026-06-17T04:51:43.810",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:facebook:hermes:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AD57D241-3E0D-490F-B160-C3E8FDD0BCBE",
              "versionEndExcluding": "0.12.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve-assign@fb.com"
}