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HIGH

CVE-2019-9022

CVSS v3

7.5

HIGH

EPSS Score

4.2 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • apcu-panelAlmaLinux:8all versions · fixed in 5.1.12-2.module_el8.3.0+2010+7c76a223and 1 other package
  • libzipAlmaLinux:8all versions · fixed in 1.5.1-2.module_el8.5.0+53+9945c2afand 2 other packages
  • phpAlmaLinux:8all versions · fixed in 7.2.24-1.module_el8.5.0+53+9945c2afand 9 other packages
  • php-dbaAlmaLinux:8all versions · fixed in 7.2.24-1.module_el8.3.0+2010+7c76a223and 6 other packages
  • php-gdAlmaLinux:8all versions · fixed in 7.2.24-1.module_el8.4.0+2228+7c76a223and 9 other packages
  • php-pearAlmaLinux:8all versions · fixed in 1:1.10.5-9.module_el8.3.0+2010+7c76a223
  • php-pecl-apcu-develAlmaLinux:8all versions · fixed in 5.1.12-2.module_el8.4.0+2228+7c76a223
  • php-pecl-zipAlmaLinux:8all versions · fixed in 1.15.3-1.module_el8.3.0+2010+7c76a223

Vendor advisories

  • CVE-2019-9022 Red Hat Product Security1,125 products fixed · 32 known affected

    php: memcpy with negative length via crafted DNS response

    rh-php70-php as a component of Red Hat Software Collections · rh-php70-php-bcmath as a component of Red Hat Software Collections · rh-php70-php-cli as a component of Red Hat Software Collections

  • ICSA-26-027-02 CISA1 known affected

    Festo Didactic SE MES PC

    Festo Didactic SE MES PC shipped with Windows 10

  • RHSA-2020:1624 Red Hat Product Security275 products fixed

    Red Hat Security Advisory: php:7.2 security, bug fix, and enhancement update

  • RHSA-2019:3299 Red Hat Product Security425 products fixed

    Red Hat Security Advisory: rh-php72-php security update

  • RHSA-2019:2519 Red Hat Product Security425 products fixed

    Red Hat Security Advisory: rh-php71-php security, bug fix, and enhancement update

Full record on NVD

Description

An issue was discovered in PHP 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.2. dns_get_record misparses a DNS response, which can allow a hostile DNS server to cause PHP to misuse memcpy, leading to read operations going past the buffer allocated for DNS data. This affects php_parserr in ext/standard/dns.c for DNS_CAA and DNS_ANY queries.

Technical details

Published
2019-02-22

Frequently asked questions

What is CVE-2019-9022?

An issue was discovered in PHP 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.2. dns_get_record misparses a DNS response, which can allow a hostile DNS server to cause PHP to misuse memcpy, leading to read operations going past the buffer allocated for DNS data. This affects php_parserr in ext/standard/dns.c for DNS_CAA and DNS_ANY queries.

Is CVE-2019-9022 actively exploited?

Active exploitation of CVE-2019-9022 has not been confirmed. Its EPSS score was 4.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-9022?

CVE-2019-9022 has a CVSS v3 base score of 7.5 (HIGH severity).

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