CVE-2015-9261

CVE-2015-9261 is a medium-severity vulnerability in Busybox with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

• Severity: Medium (CVSS 3.x base score 5.5)
• CVSS v2: 4.3
• EPSS exploit prediction: 2% (82nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-476
• Affected product: Busybox
• Published: 2018-07-26
• Last modified: 2026-06-17

Description

huft_build in archival/libarchive/decompress_gunzip.c in BusyBox before 1.27.2 misuses a pointer, causing segfaults and an application crash during an unzip operation on a specially crafted ZIP file.

Frequently asked questions

What is CVE-2015-9261?

huft_build in archival/libarchive/decompress_gunzip.c in BusyBox before 1.27.2 misuses a pointer, causing segfaults and an application crash during an unzip operation on a specially crafted ZIP file.

How severe is CVE-2015-9261?

CVE-2015-9261 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2015-9261 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-9261?

CVE-2015-9261 primarily affects Busybox. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-9261?

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

When was CVE-2015-9261 published?

CVE-2015-9261 was published on 2018-07-26 and last updated on 2026-06-17.

References

• http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
• http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
• http://packetstormsecurity.com/files/167552/Nexans-FTTO-GigaSwitch-Outdated-Components-Hardcoded-Backdoor.html
• http://seclists.org/fulldisclosure/2019/Jun/18
• http://seclists.org/fulldisclosure/2019/Sep/7
• http://seclists.org/fulldisclosure/2020/Aug/20
• http://seclists.org/fulldisclosure/2022/Jun/36
• http://www.openwall.com/lists/oss-security/2015/10/25/3
• https://bugs.debian.org/803097
• https://git.busybox.net/busybox/commit/?id=1de25a6e87e0e627aa34298105a3d17c60a1f44e
• https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html
• https://lists.debian.org/debian-lts-announce/2021/02/msg00020.html
• https://seclists.org/bugtraq/2019/Jun/14
• https://seclists.org/bugtraq/2019/Sep/7
• https://usn.ubuntu.com/3935-1/

Affected products (5)

• cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

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