vulnerability
Juniper Junos OS: 2026-01 Security Bulletin: Junos OS: SRX and MX Series: When TCP packets occur in a specific sequence flowd crashes (JSA106018) (CVE-2026-21918)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Jan 14, 2026 | Jan 27, 2026 | Jan 27, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Jan 14, 2026
Added
Jan 27, 2026
Modified
Jan 27, 2026
Description
A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX and MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).
Solution
juniper-junos-os-upgrade-latest
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