MEDIUMCVSS v3.1 5.5Actively exploited · CISA KEV since 2023-09-25Vulnerability

CVE-2023-41991

Apple iOS, iPadOS, macOS, and watchOS contain an improper certificate validation vulnerability that can allow a malicious app to bypass signature validation.

Properties

Euvd product
iOS and iPadOS, macOS
Vulnerability name
Apple Multiple Products Improper Certificate Validation Vulnerability
First seen
2025-11-04T19:21:39+00:00
Cvss score
5.5
Epss score
0.1338
Last seen
2026-10-19T12:00:27+00:00
Due date
2023-10-16
Euvd assigner
apple
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2023-09-25T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2023-09-25
Score
5.5
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Apple
Cvss vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
In Signal since
initial import (Sep 2026)
Euvd base score
5.5

Related Entities (8)

AFFECTS_PRODUCT (5)

→[Product]cpe:2.3:o:apple:ipados:17.0:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:apple:iphone_os:17.0:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Apple Multiple Products Improper Certificate Validation Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Improper Certificate Validation

INVOLVES (1)

←[Signal]kev_added · 2023-09-25

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CVE-2023-41991 (CVSS v3.1 5.5) — Ninja Signal Threat Intelligence | Ninja Signal