SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

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.

HIGH 8.2EPSS 11.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 11.3%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 3.1
8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS
11.33% probability · 96th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-190, CWE-787
Affected
perl/perl · fedoraproject/fedora · opensuse/leap · oracle/communications billing and revenue management · oracle/communications diameter signaling router · oracle/communications eagle application processor · oracle/communications eagle lnp application processor · oracle/communications lsms · oracle/communications offline mediation controller · oracle/communications performance intelligence center · oracle/communications pricing design center · oracle/configuration manager · oracle/enterprise manager base platform · oracle/sd-wan edge · oracle/tekelec platform distribution
Source
cve@mitre.org
EPSS trend
0%8%15%3 November 2026: 11.33%3 November 20263 November 2026

EPSS 11.3% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.