CVE-2019-12499: firejail_project firejail
Vulnerability summary
CVE-2019-12499 is a high (CVSS 9.3) vulnerability in firejail_project firejail. EPSS estimates a 2.02% chance of exploitation in the next 30 days, higher than 80.8% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 31-05-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Firejail before 0.9.60 allows truncation (resizing to length 0) of the firejail binary on the host by running exploit code inside a firejail sandbox and having the sandbox terminated. To succeed, certain conditions need to be fulfilled: The jail (with the exploit code inside) needs to be started as root, and it also needs to be terminated as root from the host (either by stopping it ungracefully (e.g., SIGKILL), or by using the --shutdown control command). This is similar to CVE-2019-5736.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.02%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
-0.01 pp
From 2.03% on 22-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Debian1 product
- firejail< 0.9.58.2-2
Firejail_project1 product
- firejail< 0.9.60
Ubuntu1 product
- firejailAll versions (No fix recorded)
3 vendors · 3 products