Threats Tagged 'cve-2026-21917'
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Threats Tagged 'cve-2026-21917'
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0 CVE-2026-21917 is a high-severity vulnerability in Juniper Networks Junos OS affecting SRX Series devices with UTM Web-Filtering enabled. An unauthenticated attacker can send a specially crafted malformed SSL packet to cause an FPC crash and restart, resulting in a denial-of-service (DoS) condition. The flaw arises from improper validation of syntactic correctness of input in the Web-Filtering module. Affected versions include multiple recent releases from 23.2 through 24.4, with no fixes available for earlier versions. Exploitation requires no authentication or user interaction and can be performed remotely over the network. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk to availability of critical network security infrastructure. European organizations relying on Juniper SRX devices for perimeter security and web filtering are particularly at risk. Mitigation involves upgrading to fixed Junos OS versions where available or applying compensating controls to limit exposure. Join the discussion | CVE Database V5 | 01/15/2026, 20:27:11 UTC Added: 01/15/2026, 20:45:44 UTC |
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