Security readout for executives and security teams
Plain-English summary
This vulnerability affects several SOUND4 and related broadcasting/audio products. An authenticated local user can stage a malicious file, and the device’s web interface can later execute it. That creates a path to full command execution on the appliance. Public exploit details exist, but the provided sources do not show active exploitation or a named vendor patch.
Executive priority
Treat as high priority for exposed or operationally critical broadcast systems. The risk is not theoretical because public exploit details exist, but active exploitation is not confirmed in the provided sources. Prioritize network isolation and vendor remediation checks.
Technical view
CVE-2022-50789 is a CWE-78 command injection in dns.php. Sources describe a conditional attack: a local authenticated user creates a crafted /tmp file with a .dns.pid extension, and an unauthenticated HTTP POST to dns.php triggers command execution and file deletion. CVSS 4.0 score is 8.5 high, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most relevant where affected SOUND4, BigVoice, Stream, or Kantar Media WM2 systems run vulnerable versions and expose the management web interface. Internet exposure would increase risk. Environments without these products, or with no accessible dns.php management interface, are less likely affected.
Exploitation context
Packet Storm and Zero Science Lab published technical exploit information. The source bundle does not include CISA KEV listing or other evidence of active exploitation. Exploitation appears to require local authenticated access for staging, followed by web-triggered execution through the vulnerable script.
Researcher notes
The key research gap is remediation status. Sources identify affected products and attack mechanics, but do not provide a confirmed patch version. Avoid assuming all SOUND4 products are affected beyond listed versions. Validate exposure through inventory, interface reachability, and vendor advisories.
Mitigation direction
- Check SOUND4 or product vendor guidance for fixed firmware or configuration advice.
- Restrict management web interfaces to trusted administrative networks only.
- Remove affected devices from direct internet exposure where possible.
- Review local user access and remove unnecessary accounts.
- Monitor /tmp and web logs for suspicious dns.php-related activity.
- Prioritize replacement or isolation if no vendor fix is available.
Validation and detection
- Inventory SOUND4, BigVoice, Stream, and Kantar WM2 appliances and versions.
- Compare versions against affected versions listed in the CVE record.
- Confirm whether the dns.php management endpoint is reachable from untrusted networks.
- Review authentication and local account access on affected appliances.
- Check logs for unusual requests involving dns.php.
- Verify whether vendor firmware or advisories address this CVE.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter 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-2022-50789 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——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.5HighVector: 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
Source materials
- CVE List V5 sourceCVE List V5
- Zero Science Lab Disclosure (ZSL-2022-5733)CVE reference · third-party-advisory
- Packet Storm Security Exploit DetailsCVE reference · exploit
- IBM X-Force Vulnerability Exchange EntryCVE reference · vdb-entry
- SOUND4 Product HomepageCVE reference · product
- VulnCheck Advisory: SOUND4 IMPACT/FIRST/PULSE/Eco <=2.x Conditional Command Injection via dns.phpCVE reference · third-party-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.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.