CVE-2018-4937Flash Player Out-of-Bounds Write
Adobe Flash Player versions 29.0.0.113 and earlier have an exploitable out-of-bounds write vulnerability.
Published May 19, 2018 · Updated Jul 16, 2025 · Also known as UBUNTU-CVE-2018-4937
Key Facts
Patch immediately- CVE-2018-4937 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Flash Player (Adobe), Flash Player Desktop Runtime (Adobe), flashplugin-nonfree (ubuntu) and 2 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 26% probability of exploitation in the next 30 days.
- Fixed versions are available, including Flash Player <=29.0.0.113, Flash Player Desktop Runtime <=29.0.0.113, flash-plugin 0:29.0.0.140-1.el6_9.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
26%
Higher than 97.9% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
45/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
- advisoryhttps://ubuntu.com/security/CVE-2018-4937
- advisoryhttps://www.cve.org/CVERecord?id=CVE-2018-4937
- advisoryRHSA-2018:1119
- advisoryhttps://rhn.redhat.com/errata/RHSA-2018-1119.html
- advisoryGLSA-201804-11
- advisory103708
Description
Adobe Flash Player versions 29.0.0.113 and earlier have an exploitable out-of-bounds write vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.
Affected Products
9 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Flash PlayerAdobe | See advisory | 29.0.0.113 |
| Flash Player Desktop RuntimeAdobe | See advisory | 29.0.0.113 |
| flashplugin-nonfreeubuntu | See advisory | 29.0.0.140ubuntu0.14.04.1 |
| flash-pluginredhat | See advisory | 0:29.0.0.140-1.el6_9 |
| Adobe Flash Player 29.0.0.113 and earlier versions | >= Adobe Flash Player 29.0.0.113 and earlier versions | n/a |
Patched Releases
Flash Player
<=29.0.0.113
Flash Player Desktop Runtime
<=29.0.0.113
flash-plugin
0:29.0.0.140-1.el6_9
flashplugin-nonfree
29.0.0.140ubuntu0.14.04.1, 29.0.0.140ubuntu0.16.04.1, 29.0.0.140ubuntu1
Timeline
Publicly disclosed
May 19, 2018
Last updated
Jul 16, 2025
Weakness Type
- CWE-787 Out-of-bounds Write
References
- advisoryubuntu.com · CVE-2018-4937
- advisorycve.org · CVERecord
- advisoryRHSA-2018:1119
- advisoryrhn.redhat.com · RHSA-2018-1119.html
- advisoryGLSA-201804-11
FAQ
Common Questions.
Adobe Flash Player versions 29.0.0.113 and earlier have an exploitable out-of-bounds write vulnerability.
Affected: Flash Player (Adobe); Flash Player Desktop Runtime (Adobe); flashplugin-nonfree (ubuntu), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Flash Player <=29.0.0.113, Flash Player Desktop Runtime <=29.0.0.113, flash-plugin 0:29.0.0.140-1.el6_9.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
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