How severe is CVE-2017-11164?

CVE-2017-11164 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-11164 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11164?

CVE-2017-11164 affects Pcre. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-11164?

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

When was CVE-2017-11164 published?

CVE-2017-11164 was published on 2017-07-11 and last updated on 2026-06-17.

CVE-2017-11164

CVE-2017-11164 is a high-severity vulnerability in Pcre with a CVSS 3.x base score of 7.5. 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-674.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-674
Affected product: Pcre
Published: 2017-07-11
Last modified: 2026-06-17

Description

In PCRE 8.41, the OP_KETRMAX feature in the match function in pcre_exec.c allows stack exhaustion (uncontrolled recursion) when processing a crafted regular expression.

Frequently asked questions

What is CVE-2017-11164?: In PCRE 8.41, the OP_KETRMAX feature in the match function in pcre_exec.c allows stack exhaustion (uncontrolled recursion) when processing a crafted regular expression.
How severe is CVE-2017-11164?: CVE-2017-11164 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-11164 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11164?: CVE-2017-11164 affects Pcre. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-11164?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-11164 published?: CVE-2017-11164 was published on 2017-07-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pcre:pcre:8.41:*:*:*:*:*:*:*

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