CVE-2019-3929
CRITICALCVE-2019-3929 is a critical-severity (CVSS 9.8) Cross-site Scripting (XSS) vulnerability in barco wepresent wipg-1000p firmware. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-04-15) — treat it as actively exploited and patch now. O3 Security detects and blocks CVE-2019-3929 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.
The Crestron AM-100 firmware 1.6.0.2, Crestron AM-101 firmware 2.7.0.1, Barco wePresent WiPG-1000P firmware 2.3.0.10, Barco wePresent WiPG-1600W before firmware 2.4.1.19, Extron ShareLink…
Exploitation Status
Actively exploited in the wild
- Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-04-15. Federal agencies were required to remediate by 2022-05-06.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2019-3929.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2019-3929 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE sits: patch-first territory.
Where this sits among everything scored
Of 0 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Description
The Crestron AM-100 firmware 1.6.0.2, Crestron AM-101 firmware 2.7.0.1, Barco wePresent WiPG-1000P firmware 2.3.0.10, Barco wePresent WiPG-1600W before firmware 2.4.1.19, Extron ShareLink 200/250 firmware 2.0.3.4, Teq AV IT WIPS710 firmware 1.1.0.7, SHARP PN-L703WA firmware 1.4.2.3, Optoma WPS-Pro firmware 1.0.0.5, Blackbox HD WPS firmware 1.0.0.5, InFocus LiteShow3 firmware 1.0.16, and InFocus LiteShow4 2.0.0.7 are vulnerable to command injection via the file_transfer.cgi HTTP endpoint. A remote, unauthenticated attacker can use this vulnerability to execute operating system commands as root.
Affected Products
wepresent wipg-1000p firmwarebarcowepresent wipg-1600w firmwarebarcohd wireless presentation system firmwareblackboxam-100 firmwarecrestronam-101 firmwarecrestronsharelink 200 firmwareextronResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Barco WePresent - file_transfer.cgi Command Injection (Metasploit)
by Metasploit · Jan 15, 2020
Crestron AM/Barco wePresent WiPG/Extron ShareLink/Teq AV IT/SHARP PN-L703WA/Optoma WPS-Pro/Blackbox HD WPS/InFocus LiteShow - Remote Command Injection
by Jacob Baines · May 3, 2019
Detection & mitigation playbook
Vendor / applianceDetect
Inventory every barco wepresent wipg-1000p firmware deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for remote code execution at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Fix
Apply the barco wepresent wipg-1000p firmware security patch or hotfix for CVE-2019-3929 on the affected version, following the vendor advisory for your exact build.
Workarounds
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2019-3929 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.
Tailored to CVE-2019-3929. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2019-3929 being exploited in your environment?
O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2019-3929 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.