P4Verified

CVE-2026-23455: linux kernel from 2.6.17 (inclusive), before 5.10.253 (exclusive), from 5.11 (inclusive), before 5.15.203 (exclusive)…

CVE-2026-23455. CVSS 3.1 base score 9.1 (CRITICAL, Source advisory). EPSS 0.01338 (percentile 0.70694), scored 14-Oct-2026.

Affected technology

linux kernel · from 2.6.17 (inclusive), before 5.10.253 (exclusive)
linux

linux kernel · from 5.11 (inclusive), before 5.15.203 (exclusive)
linux

linux kernel · from 5.16 (inclusive), before 6.1.167 (exclusive)
linux

linux kernel · from 6.2 (inclusive), before 6.6.130 (exclusive)
linux

linux kernel · from 6.7 (inclusive), before 6.12.78 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.18.20 (exclusive)
linux

linux kernel · from 6.19 (inclusive), before 6.19.10 (exclusive)
linux

linux kernel · 7.0 · update rc1
linux

linux kernel · 7.0 · update rc2
linux

linux kernel · 7.0 · update rc3
linux

linux kernel · 7.0 · update rc4
linux

Linux · 5e35941d990123f155b02d5663e51a24f816b6f3 to before 2121f5fbe88daff0f1fc5bc47d359426c74b86b0, 5e35941d990123f155b02d5663e51a24f816b6f3 to before 65fa92f79677858b14b9e4b7275f26639afe2710, 5e35941d990123f155b02d5663e51a24f816b6f3 to before 495e97af9e7249ee02b72bb1d0848a6efc3700f4, 5e35941d990123f155b02d5663e51a24f816b6f3 to before f5e4f4e4cdb75ec36802059a94195a31f193da60, 5e35941d990123f155b02d5663e51a24f816b6f3 to before 633e8f87dad32263f6a57dccdb873f042c062111, 5e35941d990123f155b02d5663e51a24f816b6f3 to before 9d00fe7d6d7c5b5f1065a6e042b54f2e44bd6df8, 5e35941d990123f155b02d5663e51a24f816b6f3 to before b652b05d51003ac074b912684f9ec7486231717b, 5e35941d990123f155b02d5663e51a24f816b6f3 to before f173d0f4c0f689173f8cdac79991043a4a89bf66
Linux

Linux · 2.6.17
Linux

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.5 to before *
Siemens

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.5 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.7 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.5 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens

Component: Not specified by the source
File: net/netfilter/nf_conntrack_h323_asn1.c

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 9.1/10) rates confidentiality and availability impact as high; integrity impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 15-Oct-2026 09:20 UTC

CWE: CWE-125
CCR priority: 36.7 /100 (P4)
CVSS 3.1: 9.1 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H · Source advisory
EPSS: 0.01338 · percentile 0.70694 · 2026-10-14
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-15 09:24:28.011626+00:00 UTC
GitHub Advisory Database · Source record · observed 2026-10-15 10:43:56.988652+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-15 09:18:22.406219+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-23455.html