Is CVE-2023-28962 actively exploited?

No active exploitation of CVE-2023-28962 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-28962 be exploited remotely?

Yes. CVE-2023-28962 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-28962?

CVE-2023-28962 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-28962

CWE-287Published: April 17, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An Improper Authentication vulnerability in upload-file.php, used by the J-Web component of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to upload arbitrary files to temporary folders on the device. This issue affects Juniper Networks Junos OS: All versions prior to 19.4R3-S11; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S7; 20.3 version 20.3R1 and later versions; 20.4 versions prior to 20.4R3-S6; 21.1 version 21.1R1 and later versions; 21.2 versions prior to 21.2R3-S4; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S3; 22.1 versions prior to 22.1R3-S1; 22.2 versions prior to 22.2R2-S1, 22.2R3; 22.3 versions prior to 22.3R1-S2, 22.3R2.

NVD Source

Technical Analysis

CVE-2023-28962 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.