No exploitation reportedFix available

CVE-2018-17608

Q: Is CVE-2018-17608 actively exploited?

Active exploitation of CVE-2018-17608 has not been confirmed. Its EPSS score was 3.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2018-17608?

CVE-2018-17608 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2018-09-28
Fixed in9.3
WeaknessCWE-416

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

Foxit PhantomPDF and Reader before 9.3 allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) because properties of Annotation objects are mishandled. This relates to one of five distinct types of Annotation objects.

Timeline

dates in UTC

2018-09-2809:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 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-2018-17608?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-17608?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Foxitsoftware phantompdf

Branch	Affected	Fixed in	Source
9.3	< 9.3	9.3	NVD

Foxitsoftware reader

Branch	Affected	Fixed in	Source
9.3	< 9.3	9.3	NVD

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

Fix

Update Foxitsoftware phantompdf to 9.3

Advisories and patches

www.foxitsoftware.comPatch · Vendor Advisory

Detection

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

Sources

NVDCVSS 3.09.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
NVDweakness (CWE)CWE-416read 2026-10-23
FIRST EPSSEPSS score3.2 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2018-09-28
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-17608?

Is CVE-2018-17608 actively exploited?

Active exploitation of CVE-2018-17608 has not been confirmed. Its EPSS score was 3.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-17608?

CVE-2018-17608 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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