CVE-2017-17484
highpriority · track · 41EPSS 0.045 · 91 %ileDEEUUSEPSS · scored 2026-10-23
The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
- icu-project international components for unicode≤ 60.1nvdUScpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:*:*:*
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-1660Oracle Utilities: Mehrere SchwachstellenDeutsch2019-04-16csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle Utilities ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (22)
External citations — patches, advisories, analysis.
- http://site.icu-project.org/Patchcnnvd
- https://github.com/znc/znc/issues/1459cnnvd
- https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cppcnnvd
- https://ssl.icu-project.org/trac/changeset/40714cnnvd
- https://ssl.icu-project.org/trac/changeset/40715cnnvd
- https://ssl.icu-project.org/trac/ticket/13490cnnvd
- https://ssl.icu-project.org/trac/ticket/13510cnnvd
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlcnnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan