P4Verified

CVE-2026-53268: linux kernel from 2.6.20 (inclusive), before 5.10.259 (exclusive), from 5.11 (inclusive), before 5.15.210 (exclusive)…

CVE-2026-53268. CVSS 3.1 base score 8.2 (HIGH, Source advisory). EPSS 0.00387 (percentile 0.31046), scored 14-Oct-2026.

Affected technology

linux kernel · from 2.6.20 (inclusive), before 5.10.259 (exclusive)
linux

linux kernel · from 5.11 (inclusive), before 5.15.210 (exclusive)
linux

linux kernel · from 5.16 (inclusive), before 6.1.176 (exclusive)
linux

linux kernel · from 6.2 (inclusive), before 6.6.143 (exclusive)
linux

linux kernel · from 6.7 (inclusive), before 6.12.94 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.18.36 (exclusive)
linux

linux kernel · from 6.19 (inclusive), before 7.0.13 (exclusive)
linux

linux kernel · 7.1 · update rc1
linux

linux kernel · 7.1 · update rc2
linux

linux kernel · 7.1 · update rc3
linux

linux kernel · 7.1 · update rc4
linux

linux kernel · 7.1 · update rc5
linux

linux kernel · 7.1 · update rc6
linux

Linux · 869f37d8e48f3911eb70f38a994feaa8f8380008 to before 4cdda7f868f48e2f81579371584fdbdce37df2c8, 869f37d8e48f3911eb70f38a994feaa8f8380008 to before 8a1d6e40dedfe1068aee094d851bd69e289c9fd6, 869f37d8e48f3911eb70f38a994feaa8f8380008 to before 0afc802160af0df61ed374fdb97fb34cfe5cdf2f, 869f37d8e48f3911eb70f38a994feaa8f8380008 to before 7c34f91305292083253df6a9f6c8ede02d4ccaea, 869f37d8e48f3911eb70f38a994feaa8f8380008 to before ddddd8271359961e403d11c90c9ba9fc38914f7e, 869f37d8e48f3911eb70f38a994feaa8f8380008 to before 9e5da2379f968a3ea5a6e38921ab6201576466dc, 869f37d8e48f3911eb70f38a994feaa8f8380008 to before 573810f61bcd6b6815e2ff53bbdd2b9c9d747176, 869f37d8e48f3911eb70f38a994feaa8f8380008 to before 66eba0ffce3b7e11449946b4cbbef8ea36112f56
Linux

Linux · 2.6.20
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 · V3.1.7 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 · V3.1.7 to before *
Siemens

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · 0 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 · V3.1.7 to before *
Siemens

Component: Not specified by the source
File: net/netfilter/nf_conntrack_irc.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 8.2/10) rates confidentiality impact as low; integrity impact as none; 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

CWE: CWE-125
CCR priority: 32.9 /100 (P4)
CVSS 3.1: 8.2 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H · Source advisory
EPSS: 0.00387 · percentile 0.31046 · 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-2026-53268.html