Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-6293

26
FAUCET Score

CVE-2016-6293 describes an out-of-bounds read vulnerability in the uloc_acceptLanguageFromHTTP function of International Components for Unicode (ICU) through version 57.1. This flaw, caused by a missing null terminator in a temporary array, allows remote attackers to trigger a denial of service or potentially other impacts via a crafted httpAcceptLanguage argument. With a CVSS score of 9.8 (Critical), it presents a high-severity risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its critical severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 57.1CPE matchmatch criteria
cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.96%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0496 is in the 85th percentile among its peer group of 36,835 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (5)

redhatend of lifevia redhat_api
Product: Red Hat Directory Server 8Fixed in: icu
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: icu
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: icu
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: icu
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Enterprise 2Fixed in: icu

Vendor Advisories (1)

redhatCVE-2016-6293Low

icu: Out-of-bounds access in uloc_acceptLanguageFromHTTP

Jul 3, 2016

References

git.php.net
openwall.com / lists/oss-security/2016/07/24/2
Mailing List
bugs.php.net / 72533
ExploitIssue TrackingThird Party Advisory
security.gentoo.org / glsa/201701-58
Third Party Advisory
oracle.com / technetwork/security-advisory/cpuapr2019-5072813.html
securityfocus.com / bid/92127
Third Party AdvisoryVDB Entry