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CVE-2019-9811

UNKNOWN
Published 2019-07-23T13:26:03
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No CVSS data available

Description

As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a browser feature that used the compromised translation. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

Understanding This Vulnerability

This Common Vulnerabilities and Exposures (CVE) entry provides detailed information about a security vulnerability that has been publicly disclosed. CVEs are standardized identifiers assigned by MITRE Corporation to track and catalog security vulnerabilities across software and hardware products.

The severity rating (UNKNOWN) indicates the potential impact of this vulnerability based on the CVSS (Common Vulnerability Scoring System) framework. Higher severity ratings typically indicate vulnerabilities that could lead to more significant security breaches if exploited. Security teams should prioritize remediation efforts based on severity, exploit availability, and the EPSS (Exploit Prediction Scoring System) score, which predicts the likelihood of exploitation in the wild.

If this vulnerability affects products or systems in your infrastructure, we recommend reviewing the affected products section, checking for available patches or updates from vendors, and implementing recommended workarounds or solutions until a permanent fix is available. Organizations should also monitor security advisories and threat intelligence feeds for updates about active exploitation of this vulnerability.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

References

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

EU Coordination

EU Coordinated

Exploitation Status

No Known Exploitation

ENISA Analysis

Malicious code in bioql (PyPI)

Affected Products (ENISA)

mozilla
firefox

ENISA Scoring

CVSS Score (3.1)

8.3
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Score

1.320
probability

ENISA References

https://www.suse.com/security/cve/CVE-2019-9811.html
https://www.debian.org/security/2019/dsa-4482
https://www.debian.org/security/2019/dsa-4479
https://access.redhat.com/errata/RHSA-2019:1799
https://access.redhat.com/errata/RHSA-2019:1777
https://access.redhat.com/errata/RHSA-2019:1775
https://access.redhat.com/errata/RHSA-2019:1765
https://access.redhat.com/errata/RHSA-2019:1764
https://access.redhat.com/errata/RHSA-2019:1763
https://ubuntu.com/security/CVE-2019-9811
https://advisories.mageia.org/CVE-2019-9811.html
https://security.archlinux.org/CVE-2019-9811
https://linux.oracle.com/cve/CVE-2019-9811.html
https://www.mozilla.org/security/advisories/mfsa2019-21/
https://www.mozilla.org/security/advisories/mfsa2019-22/
https://www.mozilla.org/security/advisories/mfsa2019-23/
https://bugzilla.mozilla.org/show_bug.cgi?id=1538007
https://bugzilla.mozilla.org/show_bug.cgi?id=1539598
https://bugzilla.mozilla.org/show_bug.cgi?id=1563327
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00001.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00002.html
https://security.gentoo.org/glsa/201908-12
https://security.gentoo.org/glsa/201908-20
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html

Data provided by ENISA EU Vulnerability Database. Last updated: October 3, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-63j5-535g-4392

Advisory Details

As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a browser feature that used the compromised translation. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: February 28, 2023

References

Published: 2019-07-23T13:26:03
Last Modified: 2024-08-04T22:01:54.737Z
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