How severe is CVE-2019-13636?

CVE-2019-13636 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-13636 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-13636?

CVE-2019-13636 affects Gnu Patch. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-13636?

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

When was CVE-2019-13636 published?

CVE-2019-13636 was published on 2019-07-17 and last updated on 2026-06-17.

CVE-2019-13636

CVE-2019-13636 is a medium-severity vulnerability in Gnu Patch with a CVSS 3.x base score of 5.9. 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: Medium (CVSS 3.x base score 5.9)
CVSS v2: 5.8
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Gnu Patch
Published: 2019-07-17
Last modified: 2026-06-17

Description

In GNU patch through 2.7.6, the following of symlinks is mishandled in certain cases other than input files. This affects inp.c and util.c.

Frequently asked questions

What is CVE-2019-13636?: In GNU patch through 2.7.6, the following of symlinks is mishandled in certain cases other than input files. This affects inp.c and util.c.
How severe is CVE-2019-13636?: CVE-2019-13636 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-13636 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-13636?: CVE-2019-13636 affects Gnu Patch. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-13636?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-13636 published?: CVE-2019-13636 was published on 2019-07-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnu:patch:*:*:*:*:*:*:*:*

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