🛡️ CVE-2026-33803 — junos-os-evolved

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: None.
• Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2026-33803 is classified as CWE-923: Improper Restriction of Communication Channel to Intended Endpoints. The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint.

Affected software

CVE-2026-33803 is recorded against 1 package.

• junos-os-evolved

Timeline and source

Published on 9 July 2026 and last revised on 13 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

supportportal.juniper.net

Other advisories for this package

junos-os-evolved has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-33799 (4.3 Medium, published 9 Jul 2026)
• CVE-2026-33794 (5.9 Medium, published 9 Jul 2026)
• CVE-2026-57029 (5.3 Medium, published 9 Jul 2026)
• CVE-2026-57028 (7.3 High, published 9 Jul 2026)
• CVE-2026-57025 (5.5 Medium, published 9 Jul 2026)
• CVE-2026-33801 (6.5 Medium, published 9 Jul 2026)
• CVE-2026-33783 (6.5 Medium, published 9 Apr 2026)
• CVE-2026-33780 (6.5 Medium, published 9 Apr 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-923: Improper Restriction of Communication Channel to Intended Endpoints) in other software:

• CVE-2026-62836 (8.7 High, published 7 Aug 2026)
• CVE-2026-18655 (6.5 Medium, published 3 Aug 2026)
• CVE-2026-23904 (7.3 High, published 29 Jul 2026)
• CVE-2026-63226 (5.8 Medium, published 23 Jul 2026)
• CVE-2026-59841 (7.5 High, published 14 Jul 2026)
• CVE-2016-5362 (8.0 High, published 6 Jul 2026)
• CVE-2015-8914 (9.5 Critical, published 29 Jun 2026)
• CVE-2026-55655 (5.0 Medium, published 23 Jun 2026)

Details

Affected Packages

References