CVE-2017-7868

International Components for Unicode (ICU) for C/C++ before 2017-02-13 has an out-of-bounds write caused by a heap-based buffer overflow related to the utf8TextAccess function in common/utext.cpp and the utext_moveIndex32* function.

Published: 2017-04-14 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-7868 is rated High Risk (65/100): CVSS High severity, with high exploitation likelihood (EPSS 4.45%, 90th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.41% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-7868

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.04% 4.45% +3.41%
2 2026-05-26 1.89% 1.04% -0.85%
3 2026-05-17 — 1.89% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-7868

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2017-7868

OS Trackers for CVE-2017-7868

vendor priority summary link
alpine — CVE-2017-7868: 1 source package rows (icu); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2017-7868
debian not yet assigned CVE-2017-7868 not yet assigned priority: Debian including 1 source packages (icu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-7868
gentoo normal CVE-2017-7868: 1 GLSA(s) (201710-03), 1 atom(s) (dev-libs/icu); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-7868
redhat — — https://access.redhat.com/security/cve/CVE-2017-7868
suse high CVE-2017-7868 severity important: SUSE including 13 source package names (icu-4.0-47.6.1, icu-52.1-8.7.1, …), 140 product×package rows across 50 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-Basic-On-Demand, … (50 product lines)): Fixed 140. https://www.suse.com/security/cve/CVE-2017-7868/
ubuntu medium CVE-2017-7868 medium priority: Ubuntu including 1 source packages (icu), 6 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): released 5, ignored 1. https://ubuntu.com/security/CVE-2017-7868

Affected software / configurations for CVE-2017-7868

Vendor Product Version Raw CPE
icu-project international_components_for_unicode <= 58.2 cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

References for CVE-2017-7868

cvelogic Threat Intelligence