What’s Vulnerable › Vulnerabilities

CVE-2017-8786

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-05-05 · updated 2026-06-17
• Weakness: CWE-119

Description

pcre2test.c in PCRE2 10.23 allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression.

Affected products

• PCRE2: 10.23

References

• https://blogs.gentoo.org/ago/2017/04/29/libpcre-heap-based-buffer-overflow-write-in-pcre2test-c/
• https://bugs.exim.org/show_bug.cgi?id=2079
• https://security.gentoo.org/glsa/201710-09
• https://vcs.pcre.org/pcre2?view=revision&revision=696
• https://vcs.pcre.org/pcre2?view=revision&revision=697
• https://blogs.gentoo.org/ago/2017/04/29/libpcre-heap-based-buffer-overflow-write-in-pcre2test-c/
• https://bugs.exim.org/show_bug.cgi?id=2079
• https://security.gentoo.org/glsa/201710-09
• https://vcs.pcre.org/pcre2?view=revision&revision=696
• https://vcs.pcre.org/pcre2?view=revision&revision=697

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