What is CVE-2018-4911?

CVE-2018-4911 is a high-severity vulnerability in Adobe Acrobat, classified under Use After Free. CVSS score: 8.8/10. Published 2018-02-27.

How severe is CVE-2018-4911?

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

Is CVE-2018-4911 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Adobe Acrobat

CVE-2018-4911

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a use after free vulnerability in the JavaScript API related to bookmark functionality. The vulnerability is triggered by crafted JavaScript code embedded within a PDF file. A successful attack can lead to code corruption, control-flow hijack, or a code re-use attack.

Vulnerability class: Use-After-Free

Published 2018-02-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.098 (95.4th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.098 · newest: 0.098 · change: 0.000

Affected products

Adobe Acrobat
Adobe Acrobat Dc
Adobe Acrobat Reader
Adobe Acrobat Reader Dc
Adobe Acrobat Reader 2018.009.20050 And Earlier Versions, 2017.011.30070 2015.006.30394 Versions — versions Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

www.securityfocus.com/bid/102995 (VDB Entry, Third Party Advisory, vdb-entry)
helpx.adobe.com/security/products/acrobat/apsb18-02.html (Vendor Advisory)
www.securitytracker.com/id/1040364 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-4911?: CVE-2018-4911 is a high-severity vulnerability in Adobe Acrobat, classified under Use After Free. CVSS score: 8.8/10. Published 2018-02-27.
How severe is CVE-2018-4911?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-4911 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.