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CVE-2017-6978

34
FAUCET Score

CVE-2017-6978 is a memory corruption vulnerability in the Accessibility Framework of macOS versions prior to 10.12.5. This flaw allows a malicious application to execute arbitrary code with elevated privileges or cause a denial of service. With a CVSS score of 7.8 (High), it requires user interaction (UI:R) and local access (AV:L) but can lead to high impact on confidentiality, integrity, and availability. While not listed on the CISA KEV catalog or experiencing widespread community discussion, a public exploit (EDB-42056) exists, demonstrating its potential for local privilege escalation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.12.4CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.30%
Probability of exploitation in next 30 days
EPSS Percentile
90.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-42056 · May 23, 2017
This CVE's current EPSS score of 0.0430 is in the 91st percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

support.apple.com / HT207797
Vendor Advisory
exploit-db.com / exploits/42056
securitytracker.com / id/1038484