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CVE-2015-6789

23
FAUCET Score

CVE-2015-6789 is a race condition vulnerability in the MutationObserver implementation of Blink, affecting Google Chrome versions prior to 47.0.2526.80. This flaw allows remote attackers to trigger a denial of service (use-after-free) or potentially other unspecified impacts due to unanticipated object deletion. With a CVSS score of 9.3, it is considered critical, indicating a network-based attack with medium complexity but high impact on confidentiality, integrity, and availability. While there is no known public exploit code or active exploitation listed in KEV, the vulnerability has garnered significant community discussion and media coverage, suggesting notable attention despite its inactive status on hot lists.

Impacted Technologies

VendorProductVersion(s)CPE
<= 47.0.2526.73CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.71%
Probability of exploitation in next 30 days
EPSS Percentile
74.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0171 is in the 33rd percentile among its peer group of 8,918 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, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:47.0.2526.80-1.el6
View patch

Vendor Advisories (1)

redhatCVE-2015-6789Important

chromium-browser: Use-after free in Blink

Dec 8, 2015

References

googlechromereleases.blogspot.com / 2015/12/stable-channel-update_8.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00016.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00017.html
rhn.redhat.com / errata/RHSA-2015-2618.html
code.google.com / p/chromium/issues/detail
codereview.chromium.org / 1463433002
security.gentoo.org / glsa/201603-09
debian.org / security/2015/dsa-3418
securityfocus.com / bid/78734
ubuntu.com / usn/USN-2860-1