Power Sofware PowerISO Kernel Driver scdemu.sys privileges management

published 2026-08-07 3 mo ago modified 2026-10-23 16 d ago also EUVD-2026-54349

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits: 0; none known

A security flaw has been discovered in Power Sofware PowerISO 9.3.0.0. Affected by this issue is some unknown functionality in the library C:\Windows\System32\drivers\scdemu.sys of the component Kernel Driver. The manipulation results in improper privilege management. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 3 mo ago (2026-08-07)

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

winslow1984.com https://winslow1984.com/books/cve-collection/page/poweriso-9300-kernel-driver-6900-local-privilege-escalation-via-arbitrary-registry-write-or-deletion referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.5	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA	2.0	6.8	AV:L/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
CNA	4.0	7.1	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	2.0	6.8	AV:L/AC:L/Au:S/C:C/I:C/A:C

Affected products

Power Sofware PowerISO

Classification

Weakness

CWE-269 Improper Privilege Management
CWE-266 Incorrect Privilege Assignment

References

winslow1984.com /books/cve-collection/page/poweriso-9300-kernel-driver-6900-local-privilege-escalation-via-arbitrary-registry-
exploit
vuldb.com /vuln/386707
vdb-entry
vuldb.com /vuln/386707/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-19189
third-party-advisory
vuldb.com /submit/864536
third-party-advisory

Sources

CVE List CVE-2026-19189
NVD CVE-2026-19189

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary