The vulnerability of the tcp_rack.ko module in the kernel of FreeBSD allows a hacker to increase their privileges.
🗓️ 10 Aug 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 5 Views
| Reporter | Title | Published | Views | Family All 11 |
|---|---|---|---|---|
 | FreeBSD -- Use-after-free in TCP RACK stack option handler | 30 Jun 202600:00 | – | freebsd |
 | CVE-2026-49422 | 6 Jul 202601:35 | – | circl |
 | CVE-2026-49422 | 19 Aug 202605:28 | – | cve |
 | CVE-2026-49422 Use-after-free in TCP RACK stack option handler | 19 Aug 202605:28 | – | cvelist |
 | EUVD-2026-62244 | 19 Aug 202605:28 | – | euvd |
 | FreeBSD-SA-26:43.tcp | 30 Jun 202600:00 | – | freebsd_advisory |
 | FreeBSD : FreeBSD -- Use-after-free in TCP RACK stack option handler (6c547c1b-74e2-11f1-958d-bc241121aa0a) | 1 Jul 202600:00 | – | nessus |
 | CVE-2026-49422 | 19 Aug 202606:17 | – | nvd |
 | FreeBSD Security Advisory - FreeBSD-SA-26:43.tcp | 30 Jun 202600:00 | – | packetstormnews |
 | PT-2026-55922 | 30 Jun 202600:00 | – | ptsecurity |
10
| Source | Link |
|---|---|
| freebsd | www.freebsd.org/security/advisories/FreeBSD-SA-26:43.tcp.asc |
| opennet | www.opennet.ru/opennews/art.shtml |
| cybersecurity-help | www.cybersecurity-help.cz/vdb/vulns/136013/ |
| web | www.web.nvd.nist.gov/view/vuln/detail |
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11 Aug 2026 00:00Current
5.3Medium risk
Vulners AI Score5.3
CVSS 26.8
CVSS 37.8
EPSS0.00126