CVE-2019-11758: canonical ubuntu_linux Out-of-bounds Write
Vulnerability summary
CVE-2019-11758 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 1.33% chance of exploitation in the next 30 days, higher than 71% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 17 · Related 9Timeline
- 08-01-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security was installed. This bug showed evidence of memory corruption in the accessibility engine and we presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.2, and Firefox ESR < 68.2.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.33%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.33% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (bugzilla.mozilla.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Mozilla3 products
- firefox< 69 | < 69.0
- firefox_esr< 68.2
- thunderbird< 68.2
Alpine1 product
- firefox-esr< 68.2.0-r0
Canonical1 product
- ubuntu_linuxEOL16.04
3 vendors · 5 products