Security readout for executives and security teams
Plain-English summary
Ultra RAMDisk Pro 1.82 contains a kernel-driver privilege flaw that could let a locally authenticated, low-privileged attacker gain extensive control over an affected system. Because exploitation requires prior local access, this is not a direct remote-entry vulnerability, but it could significantly amplify an initial compromise.
Executive priority
Prioritize immediate identification and containment of version 1.82, especially on administrator workstations, shared systems, and sensitive servers. The flaw can turn limited local access into severe system compromise. No vendor fix is identified in the supplied sources, so removal or disabling should be evaluated where operationally feasible.
Technical view
CVE-2026-82807 affects privilege management in URDSCSI.sys. Public reporting characterizes the flaw as a local privilege-escalation issue involving arbitrary registry-value writes. CVSS 4.0 scores it 9.3, reflecting low attack complexity, low privileges required, no user interaction, and potentially high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to systems running ieungSoft Ultra RAMDisk Pro 1.82 with the URDSCSI.sys kernel driver present. The supplied sources identify no other affected versions. Internet exposure is not required; risk is greatest where untrusted users, compromised applications, or attackers already have low-privileged local access.
Exploitation context
A public exploit disclosure is referenced, and the CVSS vector records proof-of-concept maturity. However, the CVE is not listed in CISA KEV, and the supplied sources do not establish active exploitation in real-world attacks. Treat exploitability as credible without describing widespread exploitation as confirmed.
Researcher notes
Evidence supports a local, low-complexity privilege-escalation flaw in URDSCSI.sys, with public disclosure and potential arbitrary registry-value write behavior. Exact vulnerable code paths, prerequisites, reliable detection indicators, and a vendor remediation are not established in the supplied material. Vendor non-response further limits remediation certainty.
Mitigation direction
- Inventory and prioritize systems running Ultra RAMDisk Pro 1.82 or loading URDSCSI.sys.
- Check ieungSoft guidance for an update, replacement driver, or supported mitigation.
- If operationally acceptable, remove or disable the affected product until vendor guidance is available.
- Restrict local access and software execution on affected systems as compensating controls.
- Increase monitoring for unexpected privilege changes and registry modifications on affected hosts.
Validation and detection
- Confirm installed Ultra RAMDisk Pro versions across endpoints.
- Verify whether URDSCSI.sys is installed or active on identified systems.
- Record the driver version, provenance, and affected system owners.
- Confirm removal, disabling, or vendor remediation prevents the affected driver from loading.
- Review endpoint telemetry for suspicious privilege escalation or registry changes involving the driver.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-266: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-269: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-82807 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.3 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
4 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P——VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R26VulDBCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R26VulDBAV:L/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR3.110VulDBVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
Base CVSS 2.0 score
6.8MediumVector: AV:L/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineVulDB
Advisory disclosed
- Source timelineVulDB
VulDB entry created
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineVulDB
VulDB entry last update
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- VDB-397226 | ieungSoft Ultra RAMDisk Pro Kernel Driver URDSCSI.sys privileges managementCVE reference, VulDB · vdb-entry
- VDB-397226 | CTI Indicators (IOB, IOC, TTP, IOA)CVE reference, VulDB · signature, permissions-required
- CVE-2026-82807 | CVE Analysis and ReportCVE reference, VulDB · third-party-advisory
- Submit #864537 | Ultra RAMDisk Kernel Driver URDSCSI.sys 1.82 Local Privilege EscalationCVE reference, VulDB · third-party-advisory
- https://winslow1984.com/books/cve-collection/page/ultra-ramdisk-pro-182-kernel-driver-urdscsisys-local-privilege-escalation-via-arbitrary-registry-value-writeCVE reference, VulDB · exploit
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Incorrect Privilege Assignment
Incorrect Privilege Assignment represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Privilege Management
Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.