Security readout for executives and security teams
Plain-English summary
CVE-2026-0764 is a critical unauthenticated remote code execution flaw in GPT Academic 3.91. A remote attacker could abuse the upload endpoint to run code as root. For exposed deployments, this is a high business-risk issue because compromise could allow full system takeover.
Executive priority
Treat as urgent for any exposed GPT Academic 3.91 deployment. The combination of unauthenticated access, remote execution, and root context creates a credible full-compromise risk. Prioritize containment and vendor remediation tracking.
Technical view
The flaw is CWE-502, deserialization of untrusted data, in the GPT Academic upload endpoint. The advisory states user-supplied data is not properly validated, enabling arbitrary code execution without authentication and with root context. CVSS is 9.8, network exploitable, low complexity, no privileges or user interaction required.
Likely exposure
Highest exposure is any GPT Academic 3.91 instance reachable from the internet or untrusted networks, especially where the upload endpoint is accessible. The provided sources list only version 3.91 and do not define other affected or unaffected versions.
Exploitation context
The source states remote, unauthenticated code execution is possible. CISA KEV status is false in the provided data, and no cited source confirms active exploitation. Public exploit availability is not established by the provided sources.
Researcher notes
Evidence is limited to the CVE record and ZDI advisory. The affected version listed is GPT Academic 3.91. No patch, workaround, commit, or exploit-in-the-wild confirmation is provided in the supplied sources.
Mitigation direction
- Check GPT Academic and ZDI guidance for an official fix or workaround.
- Restrict network access to GPT Academic, especially the upload endpoint.
- Place the application behind authentication or trusted network controls where possible.
- Run the service with least privilege if operationally feasible.
- Monitor for suspicious upload activity and unexpected process execution.
Validation and detection
- Inventory GPT Academic deployments and identify version 3.91.
- Confirm whether the upload endpoint is reachable from untrusted networks.
- Review service configuration to determine runtime privileges.
- Check logs for anomalous upload requests or post-upload execution indicators.
- Track vendor advisories for fixed versions or mitigations.
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-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-0764 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
- 9.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
9.8CriticalVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ZDI-26-030CVE reference · x_research-advisory
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.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.