No exploitation reportedFix available

CVE-2021-30917

Q: Is CVE-2021-30917 actively exploited?

Active exploitation of CVE-2021-30917 has not been confirmed. Its EPSS score was 1.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-30917?

CVE-2021-30917 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-08-24
Fixed in14.8.1
WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A memory corruption issue existed in the processing of ICC profiles. This issue was addressed with improved input validation. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted image may lead to arbitrary code execution.

Timeline

dates in UTC

2021-08-2419:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-30917?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-30917?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Apple iphone os

Branch	Affected	Fixed in	Source
14.8	< 14.8.1	14.8.1	NVD
15.0	= 15.0	no fix published	NVD

Apple mac os x

Branch	Affected	Fixed in	Source
10.15	< 10.15.7	10.15.7	NVD
10.15	= 10.15.7	no fix published	NVD

Apple macos

Branch	Affected	Fixed in	Source
11.x	≥ 11.0, < 11.6.1	11.6.1	NVD
12.0	= 12.0	no fix published	NVD

4 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Apple iphone os to 14.8.1

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.8read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
NVDweakness (CWE)CWE-20read 2026-10-23
FIRST EPSSEPSS score1.5 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2021-08-24
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-30917?

Is CVE-2021-30917 actively exploited?

Active exploitation of CVE-2021-30917 has not been confirmed. Its EPSS score was 1.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-30917?

CVE-2021-30917 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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