CVE-2020-21913

International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2021-09-20

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• unicode:international_components_for_unicode

References

• https://github.com/unicode-org/icu/pull/886
• https://lists.debian.org/debian-lts-announce/2021/10/msg00008.html
• https://unicode-org.atlassian.net/browse/ICU-20850
• https://www.debian.org/security/2021/dsa-5014
• https://github.com/unicode-org/icu/pull/886

Check your stackJSON