Is CVE-2017-11362 in the CISA KEV catalog?

No. CVE-2017-11362 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-11362?

CVE-2017-11362 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-11362?

CVE-2017-11362 has an EPSS score of 2.91% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-11362?

Upgrade libapache2-mod-php5 on ubuntu 14.04 to 5.5.9+dfsg-1ubuntu4.22 or later. Fixes are available for 10 affected products.

CVE & CISA-KEV Catalog

CVE-2017-11362

CRITICALEPSS 85th pctl

9.8

CVSS v3

NVD

Description

In PHP 7.x before 7.0.21 and 7.1.x before 7.1.7, ext/intl/msgformat/msgformat_parse.c does not restrict the locale length, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact within International Components for Unicode (ICU) for C/C++ via a long first argument to the msgfmt_parse_message function.

CWE-119Buffer Overflow

How to fix

Remediation Available

libapache2-mod-php5Ubuntu

Fixed in:5.5.9+dfsg-1ubuntu4.22USN-3382-1

Fixed in:5.5.9+dfsg-1ubuntu4.29+esm2USN-3566-2

libapache2-mod-php7.0Ubuntu

Fixed in:7.0.22-0ubuntu0.16.04.1USN-3382-1

php5Ubuntu

Fixed in:5.5.9+dfsg-1ubuntu4.22USN-3382-1

Fixed in:5.5.9+dfsg-1ubuntu4.29+esm2USN-3566-2

php5-cgiUbuntu

Fixed in:5.5.9+dfsg-1ubuntu4.22USN-3382-1

Fixed in:5.5.9+dfsg-1ubuntu4.29+esm2USN-3566-2

php5-cliUbuntu

Fixed in:5.5.9+dfsg-1ubuntu4.22USN-3382-1

Fixed in:5.5.9+dfsg-1ubuntu4.29+esm2USN-3566-2

php5-fpmUbuntu

Fixed in:5.5.9+dfsg-1ubuntu4.29+esm2USN-3566-2

Fixed in:5.5.9+dfsg-1ubuntu4.22USN-3382-1

php7.0Ubuntu

Fixed in:7.0.22-0ubuntu0.16.04.1USN-3382-1

php7.0-cgiUbuntu

Fixed in:7.0.22-0ubuntu0.16.04.1USN-3382-1

php7.0-cliUbuntu

Fixed in:7.0.22-0ubuntu0.16.04.1USN-3382-1

php7.0-fpmUbuntu

Fixed in:7.0.22-0ubuntu0.16.04.1USN-3382-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.91%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Vendor Advisory1

bugs.php.net

Other references4

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.