Analyst readout for executives and security teams
Plain-English summary
Acer NitroSense before 3.01.3052 has a local privilege escalation issue. A standard local user could make a privileged Acer service delete arbitrary files as SYSTEM. This is serious for managed Windows endpoints, but the bundle does not show remote exploitation or active exploitation.
Executive priority
Treat this as a high-priority endpoint hygiene issue, not an internet-wide emergency. Patch affected Acer endpoints promptly because local attackers or malware could use it to damage files or strengthen control after initial access.
Technical view
The PSAdminAgent service creates a named pipe with a weak ACL, allowing any authenticated local user to connect. The service then accepts file deletion commands without validating caller privileges, enabling arbitrary file deletion with system authority. The CVE maps to access control and privilege management weaknesses.
Likely exposure
Exposure is limited to systems running affected Acer NitroSense software. The bundle explicitly identifies version 3.01.3001 and says versions before 3.01.3052 are affected. Confirm installed versions on Acer endpoints, especially gaming or OEM-managed Windows laptops.
Exploitation context
The attack requires authenticated local access and low privileges. It is not described as remotely exploitable. KEV is false, and the provided sources do not claim active exploitation or public exploit availability.
Researcher notes
Evidence is limited to the CVE record and Acer advisory. The bundle identifies weak named pipe ACLs and missing authorization around file deletion, but does not include patch internals, detection logic, or exploit telemetry.
Mitigation direction
- Update Acer NitroSense to version 3.01.3052 or later.
- Prioritize shared, kiosk, lab, and developer workstations with Acer software installed.
- Limit local user access on affected endpoints until updated.
- Monitor Acer guidance for additional remediation details.
Validation and detection
- Inventory endpoints for Acer NitroSense or PSAdminAgent installations.
- Verify NitroSense versions are 3.01.3052 or later.
- Check whether affected systems expose the PSAdminAgent service locally.
- Review endpoint logs for unusual privileged file deletion activity.
Public sources used
Based on public source material and reviewed before publication.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupCWE-284: 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 lookupCWE-732: 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-9789 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
- High
- CVSS
- 8.5 (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:N/SI:N/SA:N
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.
CVSS vector scores
1 official scoreWe 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:N/SI:N/SA:N — — Acer Vulnerability scoring details
Base CVSS 4.0 score
8.5 HighVector: 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reserved CVE Program
The CVE ID was reserved by the assigning CNA.
- CVE published CVE Program
The CVE record was published.
- CVE updated CVE Program
The CVE record metadata indicates this as the latest update time.
Source materials
- CVE List V5 source CVE List V5
- https://community.acer.com/en/kb/articles/19670 CVE reference, Acer
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.
Improper Limitation of a Pathname to a Restricted Directory
Improper Limitation of a Pathname to a Restricted Directory represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
CWE mapping pending import
This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.
CWE mapping pending import
This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.
CWE mapping pending import
This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.