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PatchSiren cyber security CVE debrief

CVE-2019-3568 Meta Platforms CVE debrief

CVE-2019-3568 is identified in the provided corpus as a WhatsApp VOIP stack buffer overflow and is listed by CISA in its Known Exploited Vulnerabilities catalog. Because CISA classifies it as known exploited, it should be treated as an urgent remediation item and addressed using vendor update guidance as soon as possible.

Vendor
Meta Platforms
Product
WhatsApp
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-04-19
Original CVE updated
2022-04-19
Advisory published
2022-04-19
Advisory updated
2022-04-19

Who should care

Organizations that allow WhatsApp on managed mobile devices, security teams responsible for mobile app patching, and end users running WhatsApp on iOS/Android should care. Environments with MDM/MAM controls or BYOD policies should prioritize inventory and remediation.

Technical summary

The supplied sources characterize CVE-2019-3568 as a Meta Platforms WhatsApp VOIP stack buffer overflow vulnerability. CISA’s KEV entry records it as a known exploited vulnerability, with a required action to apply updates per vendor instructions. The corpus does not provide affected versions, exploit mechanics, or a CVSS score, so the primary defensive signal here is exploitation status rather than severity scoring.

Defensive priority

Urgent

Recommended defensive actions

  • Inventory all endpoints and mobile devices that have WhatsApp installed, including managed and BYOD devices.
  • Apply the latest WhatsApp updates through vendor-supported channels as soon as they are available.
  • If remediation cannot be completed quickly, restrict or isolate WhatsApp on managed devices until the update is in place.
  • Verify patch compliance through MDM, EDR, mobile app inventory, or other asset-management records.
  • Monitor official vendor and CISA references for any additional remediation guidance or updates to the KEV entry.

Evidence notes

The source corpus is limited to CISA KEV metadata and official CVE/NVD references. CISA identifies the issue as 'Meta Platforms WhatsApp WhatsApp VOIP Stack Buffer Overflow Vulnerability,' marks it as a Known Exploited Vulnerability, records dateAdded as 2022-04-19 and dueDate as 2022-05-10, and states 'Apply updates per vendor instructions.' The provided corpus does not include a CVSS score, affected versions, or detailed exploit description. The CVE publication and modification timestamps supplied here are 2022-04-19; do not infer the issue date from the numeric CVE identifier.

Official resources

Publicly cataloged by CISA as a Known Exploited Vulnerability on 2022-04-19. This debrief uses the supplied publication and modification timestamps and does not infer exploit timing beyond the catalog entry date.