Is there a public exploit for CVE-2019-20454?

No public exploit for CVE-2019-20454 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2019-20454?

CVE-2019-20454 scores CVSS 5.1 (v3.0), rated medium. EPSS puts the chance of exploitation in the next 30 days at 1.56%.

What does CVE-2019-20454 affect?

CVE-2019-20454 affects n/a n/a.

5.1 Medium

An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \X is JIT compiled and used to match specially crafted subjects…

CVE-2019-20454

An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in doextuninoutf in pcre2jitcompile.c.

Assessment

CVSS: 5.1 (v3.0)
Severity: Medium
EPSS: 1.56% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 14 February 2020
Last updated: 2 November 2026
Affected: n/a · n/a
Assigner: mitre

CVSS vectorCVSS:3.0/AC:H/AV:L/A:H/C:N/I:N/PR:N/S:U/UI:N

At the source

EUVD (ENISA)

References

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