Skip to main content
No exploitation reportedFix available

CVE-2019-12900

No exploitation reported by the sources we read.

  • Published2019-06-19
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors.

Timeline

dates in UTC
  1. 2019-06-1923:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-12900?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-12900?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Canonical ubuntu linux
BranchAffectedFixed in
12.4= 12.04no fix published
14.4= 14.04no fix published
16.4= 16.04no fix published
18.4= 18.04no fix published
19.4= 19.04no fix published
Python
BranchAffectedFixed in
3.10≥ 3.10.0, < 3.10.33.10.3
3.9≥ 3.9.0, < 3.9.113.9.11
3.8≥ 3.8.0, < 3.8.133.8.13
3.7≥ 3.7.0, < 3.7.133.7.13
Freebsd
BranchAffectedFixed in
11.2= 11.2no fix published
11.3= 11.3no fix published
12.0= 12.0no fix published

3 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • bzip2AlmaLinux:9all versions · fixed in 1.0.8-10.el9_5and 2 other packages
  • bzip2AlmaLinux:8all versions · fixed in 1.0.6-27.el8_10and 2 other packages
  • bzip2AlmaLinux:8all versions · fixed in 1.0.6-28.el8_10and 2 other packages

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-06-09
  • OpenCVESSVC decisionnone—
  • CISA-ADPCVSS 3.19.82025-06-09
  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • CISA-ADPweakness (CWE)CWE-7872025-06-09
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score8.0 %2026-10-22
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2019-06-19
Last Modified
2026-10-14
NVD status
Modified

Frequently asked questions

What is CVE-2019-12900?

BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors.

Is CVE-2019-12900 actively exploited?

Active exploitation of CVE-2019-12900 has not been confirmed. Its EPSS score was 8.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-12900?

CVE-2019-12900 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Running bzip2? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

No credit card required · No monthly cap on website lookups · 250 API requests/month