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Fencer Intel
high 7.5

CVE-2018-19935 json

ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and appl…

published 2018-12-07 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11606

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.3%
EPSS 6.3% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function.

Patch / fix

  • php php 5.6.39, 7.0.33, 7.1.26, 7.2.14
  • php7.0 Ubuntu 16.04 LTS 7.0.33-0ubuntu0.16.04.1
  • php7.2 Ubuntu 18.04 LTS 7.2.15-0ubuntu0.18.04.1
  • php-imap Ubuntu 14.04 LTS 5.4.6-0ubuntu5.1

ubuntu advisories UBUNTU-CVE-2018-19935

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • php7 SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +8 more 7.2.34-150000.4.103.1
  • php7 SLE Module for Web and Scripting 15, SLE Module for Package Hub 15 7.2.5-4.32.1
  • php7 SLE Software Development Kit 12 SP4, SLE Software Development Kit 12 SP3, SLE Module for Web and Scripting 12 7.0.7-50.63.1

suse advisories SUSE-SU-2022:4067-1SUSE-SU-2019:1461-1SUSE-SU-2019:0333-1

  • php7 openSUSE Tumbleweed 7.4.24-1.1
  • php8 openSUSE Tumbleweed 8.0.11-1.1
  • php7 openSUSE Leap 15.0 7.2.5-lp150.2.19.1
  • php7 openSUSE Leap 15.1 7.2.5-lp151.6.3.1

opensuse advisories openSUSE-SU-2024:11167-1openSUSE-SU-2024:11169-1openSUSE-SU-2019:1573-1openSUSE-SU-2019:1572-1

  • php5 Alpine 3.5 5.6.39-r0
  • php7 Alpine 3.7 7.1.29-r0

alpine advisories ALPINE-CVE-2018-19935

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-19935 updated cvss 5.9

php: NULL pointer dereference in ext/imap/php_imap.c resulting in a denial of service

  • Red Hat Software Collections rh-php70-php, rh-php70-php-gd, rh-php70-php-cli, rh-php70-php-dba, rh-php70-php-dbg, rh-php70-php-fpm, +24 more
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 5 php, php53 Red Hat Enterprise Linux 6 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +20 more Red Hat Enterprise Linux 7 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +18 more Red Hat Enterprise Linux 8 php, libzip, php-gd, php-cli, php-dba, php-dbg, +30 more Red Hat Software Collections rh-php71-php, rh-php72-php, rh-php71-php-gd, rh-php72-php-gd, rh-php71-php-cli, rh-php71-php-dba, +50 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-027-02 updated cvss 7.5

Festo Didactic SE MES PC

  • Festo Didactic SE MES PC shipped_with_Windows_10
    affected: vendor fix

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

6.28% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.