CVE-2019-3568
Published: April 19, 2022
Official Description
A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number.
CISA KEV Advisory
WhatsApp VOIP Stack Buffer Overflow Vulnerability
A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number.
Apply updates per vendor instructions.
Risk Analysis
A buffer overflow in WhatsApp's VOIP stack allows remote code execution through specially crafted RTCP packets. The high EPSS score of 0.45977 indicates a significant likelihood of exploitation, and its presence in the KEV catalog confirms it has been actively exploited.
This vulnerability has been actively exploited in the wild and is included in CISA's Known Exploited Vulnerabilities catalog. The remote nature of the attack vector makes it a critical concern.
Ensure all WhatsApp installations are updated to the latest version to patch this vulnerability. Regularly update and patch all communication software to mitigate similar risks.
Technical Analysis
CVE-2019-3568 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2019-3568 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-3568 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1