CVE-2025-30644

CWE-122 — Heap-based Buffer Overflow4 documents4 sources
Severity
7.7HIGH
EPSS
0.2%
top 59.47%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Juniper Networks Junos OSJuniper Junos
Timeline
PublishedApr 9

Description

A Heap-based Buffer Overflow vulnerability in the flexible PIC concentrator (FPC) of Juniper Networks Junos OS on EX2300, EX3400, EX4100, EX4300, EX4300MP, EX4400, EX4600, EX4650-48Y, and QFX5k Series allows an attacker to send a specific DHCP packet to the device, leading to an FPC crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. Under a rare timing scenario outside the attacker…

CVSS vector

CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L

Affected Packages2 packages

▶CVEListV5juniper_networks/junos_os22.2 — 22.2R3-S5+5
▶NVDjuniper/junos< 21.4+6

🔴Vulnerability Details

2
CVEList
Junos OS: EX2300, EX3400, EX4000 Series, QFX5k Series: Receipt of a specific DHCP packet causes FPC crash when DHCP Option 82 is enabled↗2025-04-09
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GHSA
GHSA-mjgj-xv75-mv3r: A Heap-based Buffer Overflow vulnerability in the flexible PIC concentrator (FPC) of Juniper Networks Junos OS on EX2300, EX3400, EX4100, EX4300, EX43↗2025-04-09
▶

📋Vendor Advisories

1
Juniper
CVE-2025-30644: A Heap-based Buffer Overflow vulnerability in the flexible PIC concentrator (FPC) of Juniper Networks Junos OS on EX2300, EX3400, EX4100, EX4300, EX43↗2025-04-09
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CVE-2025-30644 (HIGH CVSS 7.7) | A Heap-based Buffer Overflow vulner | cvebase.io