Security readout for executives and security teams
CVE-2019-9811 is a Mozilla sandbox escape demonstrated at Pwn2Own. A malicious language pack could compromise translation handling and let a browser feature escape normal containment. It affects older Firefox, Firefox ESR, and Thunderbird releases. Exposure is mainly legacy endpoints, VDI images, servers, or long-lived Linux distributions still running affected Mozilla packages. Current supported Firefox, Firefox ESR, and Thunderbird builds should not be assumed affected from this bundle alone. Treat this as high priority if legacy Mozilla versions remain in the environment. The issue is old, but sandbox escapes can materially increase compromise impact when paired with user interaction or another browser weakness. Mitigation focus: Upgrade Firefox to 68 or later where Firefox is deployed.; Upgrade Firefox ESR and Thunderbird to 60.8 or later.; Apply relevant Debian, openSUSE, Gentoo, or vendor package security updates..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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Privilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-9811 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.mozilla.org/security/advisories/mfsa2019-21/CVE reference · x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2019-22/CVE reference · x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2019-23/CVE reference · x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1538007CVE reference · x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1539598CVE reference · x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1563327CVE reference · x_refsource_MISC
- [debian-lts-announce] 20190802 [SECURITY] [DLA 1869-1] firefox-esr security updateCVE reference · mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20190802 [SECURITY] [DLA 1870-1] thunderbird security updateCVE reference · mailing-list, x_refsource_MLIST
- GLSA-201908-12CVE reference · vendor-advisory, x_refsource_GENTOO
- GLSA-201908-20CVE reference · vendor-advisory, x_refsource_GENTOO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.