CVE•Published 2020-03-12•Modified 2026-10-14•1 article on news•5 live references•NVD data
CVE-2020-10531Icu-project · International_components_for_unicode
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS percentile
85
Exploit Prediction Scoring System · top 15% of all CVEs
Weaknesses (CWE)
Description
An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp.
Timeline
Published 2020-03-12
Modified 2026-10-14
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag118 hosts
vuln:CVE-2020-10531Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Icu-project International Components For Unicode"All exposed Icu-project International Components For Unicode instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"International Components For Unicode"HTTP body or banner mentions "International Components For Unicode" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2020-10531Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2020-10531Censys host search filtered to this CVE id.
grep.app
CVE-2020-10531Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2020-10531GitHub code search for direct mentions.
Google dork
"CVE-2020-10531" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2020-10531 on GitHub.