No exploitation reportedFix available

CVE-2019-8617

Q: Is CVE-2019-8617 actively exploited?

Active exploitation of CVE-2019-8617 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-8617?

CVE-2019-8617 has a CVSS v3 base score of 9.6 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2019-12-18
Fixed in12.3

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

An access issue was addressed with additional sandbox restrictions. This issue is fixed in iOS 12.3. A sandboxed process may be able to circumvent sandbox restrictions.

Timeline

dates in UTC

2019-12-1818:15CVE 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-2019-8617?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-8617?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
12.3	< 12.3	12.3	NVD

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 12.3

Advisories and patches

support.apple.comVendor Advisory

Detection

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

Sources

NVDCVSS 3.19.6read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Published: 2019-12-18
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-8617?

An access issue was addressed with additional sandbox restrictions. This issue is fixed in iOS 12.3. A sandboxed process may be able to circumvent sandbox restrictions.

Is CVE-2019-8617 actively exploited?

Active exploitation of CVE-2019-8617 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-8617?

CVE-2019-8617 has a CVSS v3 base score of 9.6 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

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