CVE-2026-14355: debian debian_linux Heap-based Buffer Overflow
Vulnerability summary
CVE-2026-14355 is a medium (CVSS 5.6) Heap-based Buffer Overflow vulnerability in debian debian_linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.1% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 7 · Related 6Timeline
- 03-07-2026PublishedVulnerability first disclosed.
- 06-07-2026Last modifiedVulnerability information updated.
Description
In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRAP-PAD algorithm implementation in OpenSSL extension contains a buffer allocation flaw. The output buffer for the AES key-wrap-with-padding operation is sized from the plaintext length without accounting for RFC 5649 expansion. This may cause OpenSSL to write beyond allocated memory, corrupting heap metadata and triggering application abort.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · Red hatEcosystem advisory · calculated5.6MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LDiffers
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LDiffers
- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LDiffers
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
0.00 pp
From 0.28% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat135 products
- apcu-panel< 0:5.1.23-1.module+el9.7.0+24111+199d2cc4 | < 0:5.1.23-1.module+el8.10.0+20770+a5eca186 | < 0:5.1.18-1.module+el8.10.0+22485+a3539972 | < 0:5.1.23-1.module+el9.8.0+24343+756b4fcd
- libzip< 0:1.7.3-1.module+el8.10.0+20770+a5eca186 | < 0:1.6.1-1.module+el8.10.0+22485+a3539972
- libzip-debuginfo< 0:1.7.3-1.module+el8.10.0+20770+a5eca186 | < 0:1.6.1-1.module+el8.10.0+22485+a3539972
- libzip-debugsource< 0:1.7.3-1.module+el8.10.0+20770+a5eca186 | < 0:1.6.1-1.module+el8.10.0+22485+a3539972
- libzip-devel< 0:1.7.3-1.module+el8.10.0+20770+a5eca186 | < 0:1.6.1-1.module+el8.10.0+22485+a3539972
Suse8 products
- apache2-mod_php7&distro=SUSE Linux Enterprise Module for Legacy 15 SP7< 7.4.33-150400.4.63.1
- apache2-mod_php7&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7< 7.4.33-150400.4.63.1
- php7-embed&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7< 7.4.33-150400.4.63.1
- php7-fastcgi&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7< 7.4.33-150400.4.63.1
- php7-fpm&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7< 7.4.33-150400.4.63.1
Ubuntu7 products
- php5All versions (No fix recorded)
- php7.2All versions (No fix recorded)
- php7.4All versions (No fix recorded)
- php8.1< 8.1.2-1ubuntu2.25
- php8.3< 8.3.6-0ubuntu0.24.04.10
Debian3 products
- php8.2< 8.2.32-1~deb12u1
- php8.4< 8.4.23-1~deb13u1 | < 8.4.23-1
- debian_linux12.0
Mageia3 products
- php8.4< 8.4.23-1.mga10
- php8.5< 8.5.8-1.mga10
- php< 8.2.32-1.mga9
Php1 product
- php≥ 8.2.0, < 8.2.32 | ≥ 8.3.0, < 8.3.32 | ≥ 8.4.0, < 8.4.23 | ≥ 8.5.0, < 8.5.8
6 vendors · 157 products
References
42 linksShow all 42 references
- images.redhat.comARTICLE