How severe is CVE-2015-4156?

CVE-2015-4156 has a CVSS 2.0 base score of 3.6, rated low severity.

Is CVE-2015-4156 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4156?

CVE-2015-4156 primarily affects Gnu Parallel. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4156?

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

When was CVE-2015-4156 published?

CVE-2015-4156 was published on 2015-06-02 and last updated on 2026-06-17.

CVE-2015-4156

CVE-2015-4156 is a low-severity vulnerability in Gnu Parallel with a CVSS 2.0 base score of 3.6. 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-59.

Key facts

Severity: Low (CVSS 2.0 base score 3.6)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Gnu Parallel
Published: 2015-06-02
Last modified: 2026-06-17

Description

GNU Parallel before 20150522 (Nepal), when using (1) --cat or (2) --fifo with --sshlogin, allows local users to write to arbitrary files via a symlink attack on a temporary file.

Frequently asked questions

What is CVE-2015-4156?: GNU Parallel before 20150522 (Nepal), when using (1) --cat or (2) --fifo with --sshlogin, allows local users to write to arbitrary files via a symlink attack on a temporary file.
How severe is CVE-2015-4156?: CVE-2015-4156 has a CVSS 2.0 base score of 3.6, rated low severity.
Is CVE-2015-4156 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4156?: CVE-2015-4156 primarily affects Gnu Parallel. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-4156?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4156 published?: CVE-2015-4156 was published on 2015-06-02 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
cpe:2.3:a:gnu:parallel:*:*:*:*:*:*:*:*

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