CVE-2017-14952: Double free in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++ through 59.1 allows r

Q: How do I fix CVE-2017-14952?

international components for unicode: upgrade to newer than 59.1. Exact commands for each OS are on this page.

Q: Is CVE-2017-14952 being exploited?

CVE-2017-14952 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-14952 affect?

CVE-2017-14952 affects international components for unicode. Severity is critical (CVSS 9.8). Double free in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++ through 59.1 allows remote attackers to execute arbitrary code via a crafted string, aka a "redundant UVector entry clean up function call" issue.

Q: How urgent is CVE-2017-14952?

Priority 62/100. Critical severity; EPSS top 8%: very likely to be exploited; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2017-14952 is a critical-severity flaw (CVSS 9.8) affecting international components for unicode. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Double free in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++ through 59.1 allows remote attackers to execute arbitrary code via a crafted string, aka a "redundant UVector entry clean up function call" issue.

Why this priority

Critical severity
EPSS top 8%: very likely to be exploited
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	5.1% (top 8%)
CISA exploited list	No
Weakness	CWE-415
Published	2017-10-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: icu-project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-10-16 16:29 UTCPublished CVE record published
2026-06-17 01:07 UTCUpdated Record last modified

icu-project international components for unicode UPGRADE

Affected: <= 59.1

Fixed in: newer than 59.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy international-components-for-unicode || rpm -q international-components-for-unicode || international-components-for-unicode --version

2. UPGRADE to newer than 59.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade international-components-for-unicode

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade international-components-for-unicode

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-14952?

international components for unicode: upgrade to newer than 59.1. Exact commands for each OS are on this page.

Is CVE-2017-14952 being exploited?

CVE-2017-14952 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-14952 affect?

CVE-2017-14952 affects international components for unicode. Severity is critical (CVSS 9.8). Double free in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++ through 59.1 allows remote attackers to execute arbitrary code via a crafted string, aka a "redundant UVector entry clean up function call" issue.

How urgent is CVE-2017-14952?

Priority 62/100. Critical severity; EPSS top 8%: very likely to be exploited; Remotely exploitable, no login, no user action

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References

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