No exploitation reportedFix available

CVE-2020-10543

No exploitation reported by the sources we read.

Published2020-06-05
WeaknessCWE-190 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC

2020-06-0514:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-10543?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-10543?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Oracle communications eagle lnp application processor

Branch	Affected	Fixed in	Source
10.1	= 10.1	no fix published	NVD
10.2	= 10.2	no fix published	NVD
46.7	= 46.7	no fix published	NVD
46.8	= 46.8	no fix published	NVD
46.9	= 46.9	no fix published	NVD

Oracle sd-wan edge

Branch	Affected	Fixed in	Source
8.2	= 8.2	no fix published	NVD
9.0	= 9.0	no fix published	NVD
9.1	= 9.1	no fix published	NVD

Oracle communications billing and revenue management

Branch	Affected	Fixed in	Source
12.0	= 12.0.0.2.0	no fix published	NVD
12.0	= 12.0.0.3.0	no fix published	NVD

12 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.2read 2026-10-23
NVDCVSS 2.06.4read 2026-10-23
NVDweakness (CWE)CWE-190, CWE-787read 2026-10-23
FIRST EPSSEPSS score11.3 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Published: 2020-06-05
Last Modified: 2026-10-14
NVD status: Modified

Frequently asked questions

What is 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.

Is CVE-2020-10543 actively exploited?

Active exploitation of CVE-2020-10543 has not been confirmed. Its EPSS score was 11.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-10543?

CVE-2020-10543 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

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