CVE-2021-1353 is a high-severity denial-of-service vulnerability in Cisco StarOS and related products (ASR 5000, 5500, 5700, and Virtualized Packet Core Single Instance). An unauthenticated, remote attacker can exploit a memory leak during IPv4 packet processing by sending crafted packets, leading to an unexpected restart of the npusim process and a DoS condition. The vulnerability has a CVSS score of 8.6 (High) due to its network-based attack vector, low attack complexity, and high impact on availability. Currently, there is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 21.22.0CPE matchmatch criteria | cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:cisco:virtualized_packet_core-single_instance:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.