P4Verified

CVE-2026-23457: linux kernel from 2.6.34 (inclusive), before 5.10.253 (exclusive), from 5.11 (inclusive), before 5.15.203 (exclusive)…

CVE-2026-23457. CVSS 3.1 base score 8.6 (HIGH, Source advisory). EPSS 0.00433 (percentile 0.36024), scored 14-Oct-2026.

Affected technology

linux kernel · from 2.6.34 (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 · f5b321bd37fbec9188feb1f721ab46a5ac0b35da to before ed81b6a7012485acdb9c6c80735a0b7d8e5e1873, f5b321bd37fbec9188feb1f721ab46a5ac0b35da to before cd1b7403ec835f8a0b3f1f7e68ac26af2cb1e42f, f5b321bd37fbec9188feb1f721ab46a5ac0b35da to before b75209debb9adab287b3caa982f77788c1e15027, f5b321bd37fbec9188feb1f721ab46a5ac0b35da to before 528b4509c9dfc272e2e92d811915e5211650d383, f5b321bd37fbec9188feb1f721ab46a5ac0b35da to before 75fcaee5170e7dbbee778927134ef2e9568b4659, f5b321bd37fbec9188feb1f721ab46a5ac0b35da to before 865dba58958c3a86786f89a501971ab0e3ec6ba9, f5b321bd37fbec9188feb1f721ab46a5ac0b35da to before d4f17256544cc37f6534a14a27a9dec3540c2015, f5b321bd37fbec9188feb1f721ab46a5ac0b35da to before fbce58e719a17aa215c724473fd5baaa4a8dc57c
Linux

Linux · 2.6.34
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_sip.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 8.6/10) rates confidentiality and integrity impact as low; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 15-Oct-2026 09:20 UTC

CCR priority: 34.5 /100 (P4)
CVSS 3.1: 8.6 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H · Source advisory
EPSS: 0.00433 · percentile 0.36024 · 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-2026-23457.html