How severe is CVE-2017-1000372?

CVE-2017-1000372 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-1000372 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-2017-1000372?

CVE-2017-1000372 affects Openbsd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-1000372?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-1000372 published?

CVE-2017-1000372 was published on 2017-06-19 and last updated on 2026-06-17.

CVE-2017-1000372

CVE-2017-1000372 is a critical-severity vulnerability in Openbsd with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Openbsd
Published: 2017-06-19
Last modified: 2026-06-17

Description

A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at. This affects OpenBSD 6.1 and possibly earlier versions.

Frequently asked questions

What is CVE-2017-1000372?: A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at. This affects OpenBSD 6.1 and possibly earlier versions.
How severe is CVE-2017-1000372?: CVE-2017-1000372 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-1000372 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-2017-1000372?: CVE-2017-1000372 affects Openbsd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-1000372?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-1000372 published?: CVE-2017-1000372 was published on 2017-06-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*

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