ZDF
Sign inSign up

Vulnerabilities

Vulnerability · 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.

Published Jun 19, 2019 · catalog updated Oct 14, 2026 · BZ2_decompress in decompress.c in

Check if you run it

No confirmed exploitation is on record for CVE-2019-12900. EPSS is 7.98%. Act only if a listed version of BZ2_decompress in decompress.c in is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (BZ2_decompress in decompress.c in).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
7.98%
Remediation
Advisory link
Affected products
cpe bzip/bzip2 · cpe canonical/ubuntu linux · cpe debian/debian linux · cpe freebsd/freebsd · cpe opensuse/leap · cpe python/python

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe bzip/bzip2version unspecified
  • cpe canonical/ubuntu linux12.04
  • cpe canonical/ubuntu linux14.04
  • cpe canonical/ubuntu linux16.04
  • cpe canonical/ubuntu linux18.04
  • cpe debian/debian linux8.0
  • cpe freebsd/freebsd11.2
  • cpe opensuse/leap15.0
  • cpe opensuse/leap15.1
  • cpe python/pythonversion unspecified

How to fix CVE-2019-12900

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2019-12900. EPSS is 7.98%. Act only if a listed version of BZ2_decompress in decompress.c in is installed.

Which versions are affected?

Compare what you have installed with canonical/ubuntu linux 12.04; canonical/ubuntu linux 14.04; canonical/ubuntu linux 16.04; canonical/ubuntu linux 18.04. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 7.98%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 19, 2019 · NIST NVD

    Detected

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

  2. Oct 14, 2026 · NIST NVD

    Updated

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

Sources

  • CVE.orgVulnerability recordCVE-2019-12900

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-12900

    30-day exploitation probability 8.0%

    first.org
  • NIST NVDVulnerability recordCVE-2019-12900

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

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/153644/Slackware-Security-Advisory-bzip2-Updates.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/153957/FreeBSD-Security-Advisory-FreeBSD-SA-19-18.bzip2.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.