CASCACascade Atlas

Evidence dossier

CVE-2026-3502

TrueConf Client Update Integrity Verification Bypass

64.3–79.3Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Mar 30, 2026
Updated
Apr 3, 2026
Evidence coverage
85%
CISA KEVCatalog member

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

FIRST EPSS5.75%

2026-07-18 · v2026.06.15 · percentile 92.2%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

checkpointoriginal assertion
container

TrueConf Client Update Integrity Verification Bypass

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CISA KEVoriginal assertion
observed_exploitation

TrueConf Client Download of Code Without Integrity Check Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.057500000000; percentile 0.922270000000

Applicability

Cited product scope

Trace impact →
TrueConfTrueConf Client
[{"status": "affected", "version": "TrueConf Client versions 8.1.0 through 8.5.2"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:trueconf:trueconf:*:*:*:*:*:windows:*:*; end excluding 8.5.3.884supported

Assessments

CVSS by origin

7.8
cve@checkpoint.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
7.8
checkpointCVSS 3.1 · role unknownCVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.