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Vulnerabilities

Vulnerability · CVE-2020-10543

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

Published Jun 5, 2020 · catalog updated Oct 14, 2026 · Perl before 5.30.3 on

Check this week

CVE-2020-10543 is not in CISA KEV. FIRST estimates a 11.33% chance of exploitation in the next 30 days. Check whether you run Perl before 5.30.3 on.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Perl before 5.30.3 on).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
11.33%
Remediation
Advisory link
Affected products
cpe fedoraproject/fedora · cpe opensuse/leap · cpe oracle/communications billing and revenue management · cpe oracle/communications diameter signaling router · cpe oracle/communications eagle application processor · cpe oracle/communications eagle lnp application processor

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

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 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 oracle/communications eagle application processorversion unspecified
  • cpe oracle/communications eagle lnp application processor10.1
  • cpe perl/perlversion unspecified

How to fix CVE-2020-10543

What to do

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

Should you patch?

CVE-2020-10543 is not in CISA KEV. FIRST estimates a 11.33% chance of exploitation in the next 30 days. Check whether you run Perl before 5.30.3 on.

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; oracle/communications eagle lnp application processor 10.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-190: Integer Overflow; CWE-787: Out-of-bounds Write. EPSS 11.33%. 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

    Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

  2. Oct 14, 2026 · NIST NVD

    Updated

    Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

Sources

  • CVE.orgVulnerability recordCVE-2020-10543

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-10543

    30-day exploitation probability 11.3%

    first.org
  • NIST NVDVulnerability recordCVE-2020-10543

    Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

    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.