HIGHPOC
CVE-2015-7985
CWE-276Published: November 24, 2015· Updated: Jun 17, 2026
7.2
CVSS v3.1
Official Description
Valve Steam 2.10.91.91 uses weak permissions (Users: read and write) for the Install folder, which allows local users to gain privileges via a Trojan horse steam.exe file.
Technical Analysis
CVE-2015-7985 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A proof-of-concept (PoC) exploit exists for CVE-2015-7985. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:L/AC:L/Au:N/C:C/I:C/A:C
Affected Vendors & Products
valvesoftware1 product(s)
steam client
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
POC AVAILABLEProof-of-concept code exists
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
All References (4)
→
http://packetstormsecurity.com/files/134513/Steam-2.10.91.91-Weak-File-Permissions-Privilege-Escalation.htmlThird Party Advisory · VDB Entry
→
http://www.securityfocus.com/archive/1/536961/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
→
http://packetstormsecurity.com/files/134513/Steam-2.10.91.91-Weak-File-Permissions-Privilege-Escalation.htmlThird Party Advisory · VDB Entry
→
http://www.securityfocus.com/archive/1/536961/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
Quick Facts
CVE IDCVE-2015-7985
CVSS Score7.2 / 10
SeverityHIGH
WeaknessCWE-276
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedNov 24, 2015
Related CVEs (CWE-276)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-7985 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.