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Fencer Vulns
low 3.7

CVE-2019-11046 json

Buffer underflow in bc_shift_addsub

published 2019-12-23 6 y ago modified 2026-08-17 2 mo ago also EUVD-2019-2754

cvss
3.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters that are identified as numeric by the OS but aren't ASCII numbers. This can read to disclosure of the content of some memory locations.

Patch / fix

  • PHP Group PHP 7.2.26, 7.3.13, 7.4.1
  • php7.0 Ubuntu 16.04 LTS 7.0.33-0ubuntu0.16.04.9
  • php7.2 Ubuntu 18.04 LTS 7.2.24-0ubuntu0.18.04.2
  • php5 Ubuntu Pro 14.04 LTS 5.5.9+dfsg-1ubuntu4.29+esm8

ubuntu advisories UBUNTU-CVE-2019-11046

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
  • php5 SLE Software Development Kit 12 SP4, SLE Module for Web and Scripting 12 5.5.14-109.68.1
  • php53 SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 5.3.17-112.79.1
  • php7 SLE Software Development Kit 12 SP5, SLE Software Development Kit 12 SP4, SLE Module for Web and Scripting 12 7.0.7-50.91.1
  • php72 SLE Software Development Kit 12 SP5, SLE Software Development Kit 12 SP4, SLE Module for Web and Scripting 12 7.2.5-1.32.1
  • php7 SLE Module for Web and Scripting 15 SP1, SLE Module for Web and Scripting 15, SLE Module for Package Hub 15 7.2.5-4.49.1

suse advisories SUSE-SU-2022:4067-1SUSE-SU-2020:0522-1SUSE-SU-2020:14289-1SUSE-SU-2020:0352-1SUSE-SU-2020:0267-1SUSE-SU-2020:0101-1

  • php7 openSUSE Tumbleweed 7.4.24-1.1
  • php8 openSUSE Tumbleweed 8.0.11-1.1
  • php7 openSUSE Leap 15.1 7.2.5-lp151.6.19.2
  • php7-test openSUSE Leap 15.1 7.2.5-lp151.6.19.2

opensuse advisories openSUSE-SU-2024:11167-1openSUSE-SU-2024:11169-1openSUSE-SU-2020:0080-1

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-2019-11046 updated cvss 3.7

php: OOB read in bc_shift_addsub

  • 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-php72-php, rh-php73-php, rh-php72-php-gd, rh-php73-php-gd, rh-php72-php-cli, rh-php72-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 5.3

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

4.12% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • PHP Group PHP

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns 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.