HOMEVULNERABILITIESCVE-2018-10403
HIGH

CVE-2018-10403

CWE-295Published: June 13, 2018· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

An issue was discovered in F-Secure XFENCE and Little Flocker. A maliciously crafted Universal/fat binary can evade third-party code signing checks. By not completing full inspection of the Universal/fat binary, the user of the third-party tool will believe that the code is signed by Apple, but the malicious unsigned code will execute.

NVD Source

Technical Analysis

CVE-2018-10403 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

f-secure1 product(s)
xfence
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.okta.com/security-blog/2018/06/issues-around-third-party-apple-code-signing-checks/
ADVISORYhttps://www.okta.com/security-blog/2018/06/issues-around-third-party-apple-code-signing-checks/

All References (2)

→
https://www.okta.com/security-blog/2018/06/issues-around-third-party-apple-code-signing-checks/Exploit · Third Party Advisory
→
https://www.okta.com/security-blog/2018/06/issues-around-third-party-apple-code-signing-checks/Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2018-10403
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-295
CISA KEVNo
Affected1 vendor(s)
PublishedJun 13, 2018

Related CVEs (CWE-295)

CVE-2026-4370
10.0
CVE-2019-20461
9.8
CVE-2024-49369
9.8
CVE-2024-43177
9.8
CVE-2024-56521
9.8
CVE-2022-21654
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-10403 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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