Dashboard / CVE-2026-57029

CVE-2026-57029

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 57/100
Published: 2026-07-09 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
S: X
AT: Present
VC: None
VI: None
VA: High

Description

A Missing Synchronization vulnerability in the flow collector handler of Juniper Networks Junos OS Evolved on QFX Series allows an adjacent, unauthenticated attacker to cause a Denial-of-Service (DoS). When the reachability of an sFlow collector changes, the corresponding next-hop entry is updated. If this update occurs simultaneously with the sFlow thread accessing the next-hop data (which is outside the attackers control), it causes the evo-pfemand process to crash, impacting all traffic forwarding until the automatic process restart has completed. This issue affects Junos OS Evolved on QFX Series: * all 23.2 versions,  * 23.4 versions before 23.4R2-S7-EVO, * 24.2 versions before 24.2R2-S5-EVO, * 24.4 versions before 24.4R2-S3-EVO, * 25.2 versions before 25.2R2-EVO.

Weakness Classification (1)

Affected Software (31)

VendorProductVersion
juniper junos_os_evolved 23.2
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 23.4
juniper junos_os_evolved 24.2
juniper junos_os_evolved 24.2
juniper junos_os_evolved 24.2
juniper junos_os_evolved 24.2
juniper junos_os_evolved 24.2
juniper junos_os_evolved 24.2
juniper junos_os_evolved 24.2
juniper junos_os_evolved 24.2
juniper junos_os_evolved 24.4
juniper junos_os_evolved 24.4
juniper junos_os_evolved 24.4
juniper junos_os_evolved 24.4
juniper junos_os_evolved 24.4
juniper junos_os_evolved 24.4
juniper junos_os_evolved 24.4
juniper junos_os_evolved 25.2
juniper junos_os_evolved 25.2
juniper junos_os_evolved 25.2
Showing 30 of 31 entries

References & Advisories (1)

Bug Bounty Relevance

57 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.0 / 10.0 v4.0
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:X

EPSS — Exploitation Probability

0.19%
Raw Score 0.001900
Percentile 8.7%
Date 2026-10-31

EPSS Trend

2026-10-31
0.00190
2026-10-30
0.00190
2026-10-29
0.00190
2026-10-28
0.00190

Intelligence Sources

nvd ref →

External Links