CVE-2018-10546

HIGHNVD 7.5

7.5

An issue was discovered in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before 7.1.17, and 7.2.x before 7.2.5. An infinite loop exists in ext/iconv/iconv.c because the iconv stream filter does not reject invalid multibyte sequences.

CVSS v3: 7.5
EG Score: —
EPSS: 98.5%
KEV: Not listed

Published

April 29, 2018

Last Modified

November 21, 2024

References (24)

cve@mitrehttp://php.net/ChangeLog-5.php
cve@mitrehttp://php.net/ChangeLog-7.php
cve@mitrehttp://www.securityfocus.com/bid/104019
cve@mitrehttp://www.securitytracker.com/id/1040807
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:2519
cve@mitrehttps://bugs.php.net/bug.php?id=76249
cve@mitrehttps://lists.debian.org/debian-lts-announce/2018/06/msg00005.html
cve@mitrehttps://security.gentoo.org/glsa/201812-01
cve@mitrehttps://security.netapp.com/advisory/ntap-20180607-0003/
cve@mitrehttps://usn.ubuntu.com/3646-1/
cve@mitrehttps://www.debian.org/security/2018/dsa-4240
cve@mitrehttps://www.tenable.com/security/tns-2018-12
af854a3a-2127-422b-91ae-364da2661108http://php.net/ChangeLog-5.php
af854a3a-2127-422b-91ae-364da2661108http://php.net/ChangeLog-7.php
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/104019

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-835Loop with Unreachable Exit Condition (Infinite Loop)

Data Freshness Timeline

(refreshed 5× in last 7d / 5× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 10:43 UTCOSV refresh
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-10546?

CVE-2018-10546 is a high vulnerability published on April 29, 2018. An issue was discovered in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before 7.1.17, and 7.2.x before 7.2.5. An infinite loop exists in ext/iconv/iconv.c because the iconv stream filter does not reject invalid multibyte sequences.

When was CVE-2018-10546 disclosed?

CVE-2018-10546 was first published in the National Vulnerability Database on April 29, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-10546 actively exploited?

CVE-2018-10546 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-10546?

CVE-2018-10546 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2018-10546?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-10546, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2018-10546

📅 Published

🔄 Last Modified

🔗 References (24)