CVE-2026-3502 (GCVE-0-2026-3502)

Vulnerability from cvelistv5 – Published: 2026-03-30 18:05 – Updated: 2026-04-03 03:55
VLAI
Title
TrueConf Client Update Integrity Verification Bypass
Summary
TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-31 00:00 UTC
CWE
  • CWE-494 - Download of Code Without Integrity Check.
Impacted products
Vendor Product Version
TrueConf TrueConf Client Affected: TrueConf Client versions 8.1.0 through 8.5.2
Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3502",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-04-02",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3502"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-03T03:55:23.638Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "third-party-advisory"
            ],
            "url": "https://research.checkpoint.com/2026/operation-truechaos-0-day-exploitation-against-southeast-asian-government-targets/"
          },
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3502"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-04-02T00:00:00.000Z",
            "value": "CVE-2026-3502 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "TrueConf Client",
          "vendor": "TrueConf",
          "versions": [
            {
              "status": "affected",
              "version": "TrueConf Client versions 8.1.0 through 8.5.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-494",
              "description": "CWE-494: Download of Code Without Integrity Check.",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-30T18:05:42.806Z",
        "orgId": "897c38be-0345-43cd-b6cf-fe179e0c4f45",
        "shortName": "checkpoint"
      },
      "references": [
        {
          "url": "https://trueconf.com/blog/update/trueconf-8-5"
        }
      ],
      "title": "TrueConf Client Update Integrity Verification Bypass"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "897c38be-0345-43cd-b6cf-fe179e0c4f45",
    "assignerShortName": "checkpoint",
    "cveId": "CVE-2026-3502",
    "datePublished": "2026-03-30T18:05:42.806Z",
    "dateReserved": "2026-03-03T21:18:35.221Z",
    "dateUpdated": "2026-04-03T03:55:23.638Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-3502",
      "date": "2026-10-03",
      "epss": "0.00329",
      "percentile": "0.23707"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-3502",
                    "options": [
                      {
                        "Exploitation": "active"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-04-02T17:04:21.451016Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              },
              {
                "other": {
                  "content": {
                    "dateAdded": "2026-04-02",
                    "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3502"
                  },
                  "type": "kev"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-03-31T14:28:12.261Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "third-party-advisory"
                ],
                "url": "https://research.checkpoint.com/2026/operation-truechaos-0-day-exploitation-against-southeast-asian-government-targets/"
              },
              {
                "tags": [
                  "government-resource"
                ],
                "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3502"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2026-04-02T00:00:00.000Z",
                "value": "CVE-2026-3502 added to CISA KEV"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "TrueConf Client",
              "vendor": "TrueConf",
              "versions": [
                {
                  "status": "affected",
                  "version": "TrueConf Client versions 8.1.0 through 8.5.2"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "ADJACENT_NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-494",
                  "description": "CWE-494: Download of Code Without Integrity Check.",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-03-30T18:05:42.806Z",
            "orgId": "897c38be-0345-43cd-b6cf-fe179e0c4f45",
            "shortName": "checkpoint"
          },
          "references": [
            {
              "url": "https://trueconf.com/blog/update/trueconf-8-5"
            }
          ],
          "title": "TrueConf Client Update Integrity Verification Bypass"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "897c38be-0345-43cd-b6cf-fe179e0c4f45",
        "assignerShortName": "checkpoint",
        "cveId": "CVE-2026-3502",
        "datePublished": "2026-03-30T18:05:42.806Z",
        "dateReserved": "2026-03-03T21:18:35.221Z",
        "dateUpdated": "2026-04-03T03:55:23.638Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

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.


Loading…