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CVE-2019-11708

Improper Input Validation — is CVE-2019-11708real, exploitable, or a false positive? Here's the community ground truth.

Critical · CVSS 10EPSS 55.9%CISA KEVCWE-20 · Improper Input Validation

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer. This vulnerability affects Firefox ESR < 60.7.2, Firefox < 67.0.4, and Thunderbird < 60.7.2.

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Community ground truth

Community verdict

2 verdicts
Not a real issue

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Community real-world severity: Critical (Critical 2) — CVSS base score 10

In line with its CVSS base score.

Field notes & remediation

Verdicts are the quick signal — notes are the evidence and fixes behind them.

  • 0
    Field note · Nadia PetrovaCurated

    Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability — Mozilla Firefox and Thunderbird contain a sandbox escape vulnerability that could result in remote code execution. Listed in the CISA KEV catalog (added 2022-05-23) — confirmed exploited in the wild, not theoretical. FIRST EPSS puts the chance of exploitation in the next 30 days at ~56%. Treat it as real and prioritize remediation over triage.

  • 0
    Remediation · Aisha RahmanCurated

    Required action for Mozilla Firefox and Thunderbird: Apply updates per vendor instructions. CISA set a federal remediation due date of 2022-06-13. After patching, verify the vulnerable path is no longer reachable before closing the finding.

Same weaknessCWE-20 · Improper Input Validation.