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CVE-2016-2809

20
FAUCET Score

CVE-2016-2809 describes a vulnerability in the Mozilla Maintenance Service updater within Mozilla Firefox versions prior to 46.0 on Windows. This flaw allows a remote attacker, with user assistance, to delete arbitrary files on the affected system. The vulnerability has a CVSS v3 score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and leading to high impact on integrity (file deletion). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 45.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.66%
Probability of exploitation in next 30 days
EPSS Percentile
74.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0166 is in the 85th percentile among its peer group of 5,758 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2016-2809Moderate

Mozilla: Privilege escalation through file deletion by Maintenance Service updater (MFSA 2016-40)

Apr 26, 2016

References

lists.opensuse.org / opensuse-updates/2016-05/msg00038.html
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/201701-15
mozilla.org / security/announce/2016/mfsa2016-40.html
Vendor Advisory
securitytracker.com / id/1035692