What is CVE-2018-4990?

CVE-2018-4990 is a high-severity vulnerability in Adobe Acrobat Dc, classified under Double Free. CVSS score: 8.8/10. Published 2018-07-09.

How severe is CVE-2018-4990?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2018-4990 known to be exploited?

Yes. CVE-2018-4990 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-08), indicating it is being actively exploited. 13 public proof-of-concept repositories are indexed.

Double Free in Adobe Acrobat Dc

CVE-2018-4990

Adobe Acrobat and Reader versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier have a Double Free vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.

Vulnerability class: Double Free

Published 2018-07-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.362 (98.5th percentile), scored 2026-10-18.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.362 · newest: 0.362 · change: 0.000

Affected products

Adobe Acrobat Dc
Adobe Acrobat Reader Dc
Apple Mac OS X
Microsoft Windows
Adobe Acrobat And Reader 2018.011.20038 Earlier, 2017.011.30079 2015.006.30417 Earlier Versions — versions Adobe Acrobat and Reader 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier versions

Weakness classification (CWE)

CWE-415 — Double Free

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-06-08. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-06-22.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

helpx.adobe.com/security/products/acrobat/apsb18-09.html (Vendor Advisory)
www.securitytracker.com/id/1040920 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
www.securityfocus.com/bid/104167 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Third Party Advisory, US Government Resource)

Frequently asked questions

What is CVE-2018-4990?: CVE-2018-4990 is a high-severity vulnerability in Adobe Acrobat Dc, classified under Double Free. CVSS score: 8.8/10. Published 2018-07-09.
How severe is CVE-2018-4990?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-4990 known to be exploited?: Yes. CVE-2018-4990 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-08), indicating it is being actively exploited. 13 public proof-of-concept repositories are indexed.