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CVE-2023-45853: zlib before 1.3.1 (exclusive), 0 to before 1.3; +5 more affected products

CVE-2023-45853. CVSS 3.1 base score 9.8 (CRITICAL, NVD). EPSS 0.03179 (percentile 0.87749), scored 13-Oct-2026.

Affected technology

zlib · before 1.3.1 (exclusive)
zlib

pyminizip · through 0.2.6 (inclusive)
smihica

n/a · n/a
Vendor not specified by the source

zlib · 0 to before 1.3
zlib

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens

Description’s affected range: through 1.3

Component: Not specified by the source

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

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

What an attacker can do

NVD’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high. Source advisory’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published

CWE
CWE-190
CCR priority
40.0 /100 (P3)
CVSS 3.1
9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · NVD
EPSS
0.03179 · percentile 0.87749 · 2026-10-13
KEV
no

Provenance

Stable permalink: https://cybercodered.org/item/cve-cve-2023-45853.html