SARA / Free Tools / CVE / CVE-2019-11708

CVE-2019-11708 — Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability

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

CVSS
EPSS
68.88% (top 1.40%)
CWE
Published
2019-07-23T13:20:03.000Z
Last modified
2025-10-21T23:45:33.259Z
CVSS vector
CISA KEV — Actively Exploited
Added to KEV
2022-05-23
BOD 22-01 due
2022-06-13
Ransomware use
Unknown

01What is this vulnerability?

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…

02Affected products

VendorProductVersions
MozillaFirefox ESRunspecified
MozillaFirefoxunspecified
MozillaThunderbirdunspecified

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-05-23. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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