Main Vulnerability Database SB2026070861

SB2026070861 - Junos OS Evolved update for libfetch

Published: July 8, 2026

Security Bulletin ID SB2026070861

CSH Severity

High

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Remote access

Highest impact Code execution

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Buffer overflow (CVE-ID: CVE-2020-7450)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing untrusted input in libfetch(3). A remote attacker can, who can supply a malicious URL to the application that uses libfetch(3), can trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-URL-handling-vulnerability-in-libfetch-results-in-heap-buffer-overflow-CVE-2020-7450