CVE-2021-0249 is a critical buffer overflow vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS, specifically impacting SRX Series devices configured with UTM services. An unauthenticated attacker can exploit this by sending crafted packets, potentially leading to arbitrary code execution, device takeover, or service disruption. With a CVSS score of 9.8 (Critical), this vulnerability has a low attack complexity and high impact on confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness and potential future exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 17.4, < 17.4R2-S9CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
>= 15.1X49, < 15.1X49-D190CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
>= 18.1, < 18.1R3-S9CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
>= 18.2, < 18.2R3-S1CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
15.1x49CPE matchmatch criteria | cpe:2.3:o:juniper:junos:15.1x49:-:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.