CVE-2020-12884 is a critical buffer over-read vulnerability affecting the CoAP library in Arm Mbed OS 5.15.3. Specifically, the sn_coap_parser_options_parse_multiple_options() function fails to perform an out-of-bounds check when parsing CoAP options, leading to memory access outside the intended buffer. This vulnerability has a CVSS score of 9.1 (CRITICAL), indicating it can be exploited remotely with low complexity, potentially leading to high impact on confidentiality and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the high severity warrants attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
5.15.3CPE matchmatch criteria | cpe:2.3:o:arm:mbed_os:5.15.3:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.
Remediation records are not available for this CVE.