Critical severity · published Nov 21, 2023
CVE-2023-5055
Possible variant of CVE-2021-3434 in function le_ecred_reconf_req
9.8
CVSS
0.8%
EPSS
No
On KEV
Description
Possible variant of CVE-2021-3434 in function le_ecred_reconf_req.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZE
Zephyr · Zephyrproject
through 3.4.0 · source: NVD
Affected product
ZE
Zephyr
Zephyrproject
More from Zephyr
10.0
CVE-2023-4260
Potential off-by-one buffer overflow vulnerability in the Zephyr fuse file system
9.8
CVE-2026-13214
Stack buffer overflow in OCPP GetConfiguration key parsing
9.8
CVE-2026-10666
Stack buffer overflow in `net_ipaddr_parse()` IPv4 address-with-port parsing in `subsys/net/ip/utils.c`
9.8
CVE-2026-5067
Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key
9.8
CVE-2026-1678
dns: memory‑safety issue in the DNS name parser