CVE-2026-77190

On affected platforms running Arista EOS, an unauthenticated attacker who is network-adjacent to the switch and able to connect to a device with PIM Sparse Mode and MLAG configured, can send malformed messages that cause the Pimsm agent to terminate unexpectedly. The Pimsm agent is automatically...

CVE-2026-77190

CVE-2026-77190 affects Arista EOS where an unauthenticated, network-adjacent attacker can send malformed PIM Sparse Mode messages to a device with both PIM SM and MLAG configured, causing the Pimsm agent to crash. Repeated attacks produce a sustained denial of service through continuous agent res...

CVE-2026-77190 Security Advisory 0177

On affected platforms running Arista EOS, an unauthenticated attacker who is network-adjacent to the switch and able to connect to a device with PIM Sparse Mode and MLAG configured, can send malformed messages that cause the Pimsm agent to terminate unexpectedly. The Pimsm agent is automatically...

CVE-2026-77190: Improper Input Validation

On affected platforms running Arista EOS, an unauthenticated attacker who is network-adjacent to the switch and able to connect to a device with PIM Sparse Mode and MLAG configured, can send malformed messages that cause the Pimsm agent to terminate unexpectedly. The Pimsm agent is automatically...

PT-2026-93428

Name of the Vulnerable Software and Affected Versions Arista EOS affected versions not specified Description An unauthenticated attacker network-adjacent to the switch can cause a sustained denial of service on devices configured with PIM Sparse Mode and MLAG. By sending malformed messages, the...

Security Advisory 0177

Security Advisory 0177 . CSAF PDF Date: September 9, 2026 Revision | Date | Changes ---|---|--- 1.0 | September 9, 2026 | Initial release 1.1 | September 17, 2026 | Moved 7368X4 Series to Affected 1.2 | September 22, 2026 | CSAF JSON file added The CVE-ID tracking this issue: CVE-2026-77190...

Security Advisory 0175

Security Advisory 0175 . CSAF PDF Date: September 9, 2026 Revision | Date | Changes ---|---|--- 1.0 | September 9, 2026 | Initial release 1.1 | September 22, 2026 | CSAF JSON file added The CVE-ID tracking this issue: CVE-2026-73468 CVSSv3.1 Base Score: 6.5...