FKIE_CVE-2021-26718

Vulnerability from fkie_nvd - Published: 2021-04-01 19:15 - Updated: 2026-06-17 03:43
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
KIS for macOS in some use cases was vulnerable to AV bypass that potentially allowed an attacker to disable anti-virus protection.
References
vulnerability@kaspersky.comhttps://support.kaspersky.com/general/vulnerability.aspx?el=12430#310321Broken Link, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.kaspersky.com/general/vulnerability.aspx?el=12430#310321Broken Link, Vendor Advisory
Impacted products
Vendor Product Version
kaspersky internet_security *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Kaspersky Internet Security for Mac",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "prior to 21.1"
            }
          ]
        }
      ],
      "source": "vulnerability@kaspersky.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kaspersky:internet_security:*:*:*:*:*:macos:*:*",
              "matchCriteriaId": "750382DA-D225-4028-B115-46B8F1CAE9A2",
              "versionEndExcluding": "21.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "KIS for macOS in some use cases was vulnerable to AV bypass that potentially allowed an attacker to disable anti-virus protection."
    },
    {
      "lang": "es",
      "value": "KIS para macOS en algunos casos de uso era vulnerable a la omisi\u00f3n de AV que potencialmente permit\u00eda a un atacante deshabilitar la protecci\u00f3n antivirus."
    }
  ],
  "id": "CVE-2021-26718",
  "lastModified": "2026-06-17T03:43:43.080",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-04-01T19:15:13.950",
  "references": [
    {
      "source": "vulnerability@kaspersky.com",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ],
      "url": "https://support.kaspersky.com/general/vulnerability.aspx?el=12430#310321"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ],
      "url": "https://support.kaspersky.com/general/vulnerability.aspx?el=12430#310321"
    }
  ],
  "sourceIdentifier": "vulnerability@kaspersky.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.