CVE WatchNov 5, 2026

CVE-2026-93424

FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, peer_find_template() in src/netflow_plugin/netflow_

CVSS

7.5

High

EPSS

—

KEV

—

Exploit Today

—

0-100

Published: Nov 5, 2026 · Last modified: Nov 5, 2026 · CWE-416

EPSS · 30d

Not enough EPSS history yet.

Technical description

FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, peer_find_template() in src/netflow_plugin/netflow_collector.cpp and src/netflow_plugin/netflow_v9_collector.cpp returns a pointer into global_netflow9_templates after releasing the cache mutex. On deployments with at least two entries in netflow_ports, concurrent template redefinition and data-flowset processing can let add_update_peer_template() reassign the template and free its records vector while another listener dereferences the escaped pointer. An unauthenticated sender that can reach both NetFlow/IPFIX listener ports can trigger a heap-use-after-free and reliably crash FastNetMon. No fixed release is available as of this review.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-69044—

3.4%

——1In the Samsung GPU driver, improper reference count handling during command submission can lead to memory corruption.1d CVE-2026-69043—

3.4%

——1In the Samsung Exynos GPU driver, improper synchronization during buffer object creation and closing can lead to memory corruption1d CVE-2026-824189.8 CRI

38.6%

——12IBM Watson Speech Services Cartridge 4.0.0 through 5.4.0 could allow a remote attacker to execute arbitrary code due to a use-after-free vulnerability.1d CVE-2026-1219635.9 MED

23.8%

——7FreeRDP before 3.32.2 contains a use-after-free vulnerability in the asynchronous dynamic rdpsnd channel that allows malicious RDP servers to trigger freed callback access by closing the channel with queued audio PDUs. Attackers can send a training PDU then close the channel so the playback thread reads the freed callback in rdpsnd_virtual_channel_write, crashing the client.10h CVE-2026-1219557.5 HIG

36.2%

——11FreeRDP before 3.32.2 contains a use-after-free vulnerability in Emulate_SCardReleaseContext that frees the emulated SCardContext before its worker thread is cancelled and joined. A malicious server can send ESTABLISHCONTEXT, a long-timeout GETSTATUSCHANGE, then RELEASECONTEXT smartcard IRPs to corrupt heap memory or crash clients using smartcard emulation.10h CVE-2026-1219539.8 CRI

46.5%

——14FreeRDP before 3.32.2 has a use-after-free in the client's rdpgfx dynamic virtual channel: a duplicate-name channel with a new ChannelId overwrites the listener's single callback slot, which rdpgfx_on_close frees without clearing. A malicious RDP server can open and close such a channel, then send a PDU on the original channel to crash the client or potentially execute code.10h