Security readout for executives and security teams
Plain-English summary
Streambert versions before 2.5.0 can let a compromised application window abuse the trusted updater to download and run an arbitrary program. Successful exploitation could fully compromise the user’s system and threaten data confidentiality, integrity, and availability.
Executive priority
Treat this as an urgent endpoint remediation because successful exploitation enables arbitrary code execution with severe business impact. Upgrade vulnerable installations promptly, while recognizing that the supplied evidence does not establish active exploitation.
Technical view
The Electron main process accepts an auto-updater URL from renderer IPC without adequate validation. A compromised renderer can direct the privileged updater to retrieve and execute an arbitrary binary. The issue is classified as CWE-494 and carries CVSS 4.0 score 9.3. Version 2.5.0 contains the patch.
Likely exposure
Exposure is limited to systems running Streambert versions earlier than 2.5.0. The supplied sources do not identify affected operating systems, deployment prevalence, internet-facing services, or reliable indicators of compromise.
Exploitation context
The documented attack requires control of, or compromise within, the Streambert renderer process before abusing the updater path. The supplied record is not in KEV and provides no evidence of active exploitation. Absence from KEV does not prove exploitation is not occurring.
Researcher notes
The trust-boundary failure is renderer-to-main IPC combined with insufficient validation of updater-controlled content. The advisory describes arbitrary binary download and execution, aligning with CWE-494. Public evidence supplied here does not establish exploit availability, observed campaigns, platform-specific behavior, or indicators of compromise.
Mitigation direction
- Upgrade Streambert to version 2.5.0 or later.
- Prioritize systems handling sensitive accounts, downloads, or business data.
- Restrict or temporarily remove vulnerable installations where immediate upgrading is impossible.
- Review the vendor advisory and release notes for additional guidance.
Validation and detection
- Inventory installed Streambert versions and identify every installation earlier than 2.5.0.
- Confirm upgraded endpoints report Streambert 2.5.0 or later.
- Review endpoint telemetry for unexpected updater downloads or child-process execution.
- Investigate unusual binaries executed from Streambert-related update locations or processes.
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-494: 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 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-2026-48046 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:N/AC:L/AT:N/PR:N/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.
SSVC decision data
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:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——GitHub_MVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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 reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- 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
- https://github.com/truelockmc/streambert/security/advisories/GHSA-vj74-r9xm-37mjCVE reference, GitHub_M · x_refsource_CONFIRM
- https://github.com/truelockmc/streambert/releases/tag/2.5.0CVE reference, GitHub_M · x_refsource_MISC
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.
Download of Code Without Integrity Check
Download of Code Without Integrity Check represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.