Security readout for executives and security teams
CVE-2019-11713 is a Mozilla memory-safety flaw in HTTP/2 handling. Older Firefox, Firefox ESR, and Thunderbird versions could crash in a potentially exploitable way when an HTTP/2 stream was closed while still in use. This is mainly urgent for organizations with legacy Mozilla clients or unpatched Linux desktop packages. Exposure is likely limited to outdated Mozilla client installations, including distribution-packaged Firefox ESR or Thunderbird still below the fixed versions. Modern managed endpoints should be checked for legacy application installs, stale VDI images, and long-lived Linux LTS systems. Prioritize remediation where legacy Mozilla clients remain in use, especially on managed desktops or email workflows. This is not presented as actively exploited, but memory-safety flaws in browsers and mail clients deserve prompt closure because user interaction with remote content can create business risk. Mitigation focus: Upgrade Firefox to version 68 or later.; Upgrade Firefox ESR to version 60.8 or later.; Upgrade Thunderbird to version 60.8 or later..
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
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ATT&CK lookup starting points
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CVE-2019-11713 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=1528481CVE 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.