CVE-2019-11760: canonical ubuntu_linux Out-of-bounds Write
Vulnerability summary
CVE-2019-11760 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 1.36% chance of exploitation in the next 30 days, higher than 71.8% of scored vulnerabilities.
Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 26 · Related 14Timeline
- 08-01-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A fixed-size stack buffer could overflow in nrappkit when doing WebRTC signaling. This resulted in a potentially exploitable crash in some instances. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- 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
1.36%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
Decrease -0.22 pp
From 1.58% 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
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu4 products
- firefox< 70.0+build2-0ubuntu0.16.04.1 | < 70.0+build2-0ubuntu0.18.04.1 | < 70.0+build2-0ubuntu1
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- thunderbird< 1:68.7.0+build1-0ubuntu0.16.04.2 | < 1:68.2.1+build1-0ubuntu0.18.04.1
Alpine3 products
- firefox< 70.0-r0
- firefox-esr< 68.2.0-r0
- librewolf< 70.0-r0
Mozilla3 products
- firefox< 70 | < 70.0
- firefox_esr< 68.2
- thunderbird< 68.2
Debian2 products
- firefox-esr< 68.2.0esr-1
- thunderbird< 1:68.2.1-1
Canonical1 product
- ubuntu_linuxEOL16.04
5 vendors · 13 products
