How severe is CVE-2016-3189?

CVE-2016-3189 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-3189 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3189?

CVE-2016-3189 primarily affects Bzip Bzip2. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-3189?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-3189 published?

CVE-2016-3189 was published on 2016-06-30 and last updated on 2026-06-17.

CVE-2016-3189

CVE-2016-3189 is a medium-severity vulnerability in Bzip Bzip2 with a CVSS 3.x base score of 6.5. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-416.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 16% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Bzip Bzip2
Published: 2016-06-30
Last modified: 2026-06-17

Description

Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to cause a denial of service (crash) via a crafted bzip2 file, related to block ends set to before the start of the block.

Frequently asked questions

What is CVE-2016-3189?: Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to cause a denial of service (crash) via a crafted bzip2 file, related to block ends set to before the start of the block.
How severe is CVE-2016-3189?: CVE-2016-3189 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-3189 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3189?: CVE-2016-3189 primarily affects Bzip Bzip2. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-3189?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-3189 published?: CVE-2016-3189 was published on 2016-06-30 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:bzip:bzip2:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*

More vulnerabilities in Bzip Bzip2

CVE-2019-12900 — Critical (CVSS 9.8): BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors.
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CVE-2005-1260 — Medium (CVSS 5.0): bzip2 allows remote attackers to cause a denial of service (hard drive consumption) via a crafted bzip2 file that…
CVE-2002-0759 — Medium (CVSS 5.0): bzip2 before 1.0.2 in FreeBSD 4.5 and earlier, OpenLinux 3.1 and 3.1.1, and possibly other operating systems, does not…
CVE-2011-4089 — Medium (CVSS 4.6): The bzexe command in bzip2 1.0.5 and earlier generates compressed executables that do not properly handle temporary…
CVE-2008-1372 — Medium (CVSS 4.3): bzlib.c in bzip2 before 1.0.5 allows user-assisted remote attackers to cause a denial of service (crash) via a crafted…

All CVEs affecting Bzip Bzip2 →

Other CWE-416 (Use After Free) vulnerabilities

CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

Browse all CWE-416 (Use After Free) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

141.109.168.26 (ipv4-addr)
141.109.168.107 (ipv4-addr)
120.28.109.188 (ipv4-addr)
139.59.183.60 (ipv4-addr)
84.247.136.70 (ipv4-addr)
141.109.168.51 (ipv4-addr)
160.202.46.190 (ipv4-addr)
41.216.182.77 (ipv4-addr)