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CVE-2017-3063

27
FAUCET Score

CVE-2017-3063 is a critical use-after-free vulnerability in the ActionScript2 NetStream class of Adobe Flash Player versions 25.0.0.127 and earlier, impacting products from Adobe, Apple, Google, Linux, and Microsoft. With a CVSS score of 9.8, it can be exploited remotely with low complexity, potentially leading to arbitrary code execution. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability garnered significant community discussion and media coverage at the time of its disclosure. It is not listed on CISA's KEV catalog and is currently inactive on the Hot List.

Impacted Technologies

VendorProductVersion(s)CPE
<= 25.0.0.127CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:edge:*:*
<= 25.0.0.127CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:internet_explorer:*:*
<= 25.0.0.127CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:chrome:*:*
<= 25.0.0.127CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
8.89%
Probability of exploitation in next 30 days
EPSS Percentile
94.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0889 is in the 90th percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: flash-plugin-0:25.0.0.148-1.el6_9
View patch
adobevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2017-3063Critical

flash-plugin: multiple code execution issues fixed in APSB17-10

Apr 11, 2017

References

zerodayinitiative.com / advisories/ZDI-17-279
Third Party AdvisoryVDB Entry
access.redhat.com / errata/RHSA-2017:0934
helpx.adobe.com / security/products/flash-player/apsb17-10.html
Vendor Advisory
security.gentoo.org / glsa/201704-04
securityfocus.com / bid/97551
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038225