Is CVE-2017-8399 actively exploited?

CVE-2017-8399 has no public evidence of in-the-wild exploitation as of 2025-04-20.

What is the CVSS score for CVE-2017-8399?

CVE-2017-8399 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2017-8399?

Patch guidance is available from pcre security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2017-8399.

Fix CVE-2017-8399 - CRITICAL pcre pcre2

Description

PCRE2 before 10.30 has an out-of-bounds write caused by a stack-based buffer overflow in pcre2_match.c, related to a "pattern with very many captures."

CVSS Metrics

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-119 · Memory Buffer Errors

Metadata

Primary Vendor: PCRE
Published: 5/1/2017
Last Modified: 4/20/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

pcre : pcre2

Remediation Guidance

Executive Summary

Cite this page

CVE-2017-8399. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2017-8399

View on NIST NVD

CVE-2017-8399 vulnerability