CVE-2021-36154 is a denial-of-service vulnerability affecting gRPC Swift versions 1.1.1 and earlier, specifically within the HTTP2ToRawGRPCServerCodec component. An unauthenticated remote attacker can exploit this by sending numerous small messages within a single HTTP/2 frame, triggering uncontrolled recursion and stack exhaustion. Rated with a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to a complete denial of service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.0.0CPE matchmatch criteria | cpe:2.3:a:linuxfoundation:grpc_swift:1.0.0:*:*:*:*:*:*:* | ||
1.1.0CPE matchmatch criteria | cpe:2.3:a:linuxfoundation:grpc_swift:1.1.0:*:*:*:*:*:*:* | ||
1.1.1CPE matchmatch criteria | cpe:2.3:a:linuxfoundation:grpc_swift:1.1.1:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.