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Vulnerabilities

Vulnerability · CVE-2020-12723

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

Published Jun 5, 2020 · catalog updated Oct 14, 2026 · regcomp.c in Perl before

Check if you run it

No confirmed exploitation is on record for CVE-2020-12723. EPSS is 5.97%. Act only if a listed version of regcomp.c in Perl before is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (regcomp.c in Perl before).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
5.97%
Remediation
Advisory link
Affected products
cpe fedoraproject/fedora · cpe netapp/oncommand workflow automation · cpe netapp/snap creator framework · cpe opensuse/leap · cpe oracle/communications billing and revenue management · cpe oracle/communications diameter signaling router

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe fedoraproject/fedora31
  • cpe netapp/oncommand workflow automationversion unspecified
  • cpe netapp/snap creator frameworkversion unspecified
  • cpe opensuse/leap15.1
  • cpe oracle/communications billing and revenue management12.0.0.2.0
  • cpe oracle/communications billing and revenue management12.0.0.3.0
  • cpe oracle/communications diameter signaling routerversion unspecified
  • cpe perl/perlversion unspecified

How to fix CVE-2020-12723

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2020-12723. EPSS is 5.97%. Act only if a listed version of regcomp.c in Perl before is installed.

Which versions are affected?

Compare what you have installed with oracle/communications billing and revenue management 12.0.0.2.0; oracle/communications billing and revenue management 12.0.0.3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-120: Classic Buffer Overflow. EPSS 5.97%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 5, 2020 · NIST NVD

    Detected

    regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

  2. Oct 14, 2026 · NIST NVD

    Updated

    regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

Sources

  • CVE.orgVulnerability recordCVE-2020-12723

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-12723

    30-day exploitation probability 6.0%

    first.org
  • NIST NVDVulnerability recordCVE-2020-12723

    regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.