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CVE-2018-6853

24
FAUCET Score

CVE-2018-6853 describes a Local Privilege Escalation vulnerability affecting Sophos SafeGuard Enterprise before 8.00.5, SafeGuard Easy before 7.00.3, and SafeGuard LAN Crypt before 3.95.2. An attacker can exploit a crafted input buffer via IOCTL 0x80206024 to control execution, allowing them to modify or zero-out the security descriptor of a privileged process and execute code as SYSTEM. This vulnerability has a CVSSv3 score of 7.8 (High), indicating a low attack complexity and requiring local user privileges, but leading to high impacts on confidentiality, integrity, and availability. There is currently no public exploit code available, no evidence of active exploitation, and minimal community or media discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
6.00CPE matchmatch criteria
cpe:2.3:a:sophos:safeguard_easy_device_encryption_client:6.00:*:*:*:*:*:*:*
6.10CPE matchmatch criteria
cpe:2.3:a:sophos:safeguard_easy_device_encryption_client:6.10:*:*:*:*:*:*:*
7.00CPE matchmatch criteria
cpe:2.3:a:sophos:safeguard_easy_device_encryption_client:7.00:*:*:*:*:*:*:*
5.60.3CPE matchmatch criteria
cpe:2.3:a:sophos:safeguard_enterprise_client:5.60.3:vs-nfd:*:*:*:*:*:*
6.00CPE matchmatch criteria
cpe:2.3:a:sophos:safeguard_enterprise_client:6.00:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
0.61%
Probability of exploitation in next 30 days
EPSS Percentile
45.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0061 is in the 84th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 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

Remediation records are not available for this CVE.

References

community.sophos.com / kb/en-us/131934
PatchVendor Advisory
seclists.org / fulldisclosure/2018/Jul/20
Mailing ListThird Party Advisory
labs.nettitude.com / blog/cve-2018-6851-to-cve-2018-6857-sophos-privilege-escalation-vulnerabilities
ExploitTechnical DescriptionThird Party Advisory