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TI-2026-00630 Aliases CVE-2026-0849

crypto: ATAES132A response length allows stack buffer overflow

Priority MEDIUM 63CWE-120Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

Malformed ATAES132A responses with an oversized length field overflow a 52-byte stack buffer in the Zephyr crypto driver, allowing a compromised device or bus attacker to corrupt kernel memory and potentially hijack execution.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0025 16th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

No affected products listed by the sources yet.

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:zephyrproject:zephyr:4.3.0:-:*:*:*:*:*:*4.3.0Vulnerablezephyrproject
cpe:2.3:o:zephyrproject:zephyr:4.3.0:rc1:*:*:*:*:*:*4.3.0 rc1Vulnerablezephyrproject
cpe:2.3:o:zephyrproject:zephyr:4.3.0:rc2:*:*:*:*:*:*4.3.0 rc2Vulnerablezephyrproject
cpe:2.3:o:zephyrproject:zephyr:4.3.0:rc3:*:*:*:*:*:*4.3.0 rc3Vulnerablezephyrproject
  • cpe:2.3:o:zephyrproject:zephyr:4.3.0:-:*:*:*:*:*:* Versions 4.3.0 Vulnerable ·zephyrproject
  • cpe:2.3:o:zephyrproject:zephyr:4.3.0:rc1:*:*:*:*:*:* Versions 4.3.0 rc1 Vulnerable ·zephyrproject
  • cpe:2.3:o:zephyrproject:zephyr:4.3.0:rc2:*:*:*:*:*:* Versions 4.3.0 rc2 Vulnerable ·zephyrproject
  • cpe:2.3:o:zephyrproject:zephyr:4.3.0:rc3:*:*:*:*:*:* Versions 4.3.0 rc3 Vulnerable ·zephyrproject

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-0849
  2. 2026-10-16 Fix available: [email protected] · CNA

References

Exploit 1

  • TI-2026-04422 Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key CVSS 3.1CRITICAL 9.8
  • TI-2026-01361 dns: memory‑safety issue in the DNS name parser CVSS 3.1CRITICAL 9.8
  • TI-2026-09174 Unterminated URI buffer causes out-of-bounds read in LwM2M firmware pull (Package URI) CVSS 3.1CRITICAL 9.1
  • TI-2026-09168 Stack buffer overflow in `net_ipaddr_parse()` IPv4 address-with-port parsing in `subsys/net/ip/utils.c` CVSS 3.1CRITICAL 9.8
  • TI-2024-09625 net: lib: http_server: Buffer Under-read CVSS 3.1HIGH 8.6
  • TI-2021-02863 Usb bluetooth device ACL read cb buffer overflow CVSS 3.1CRITICAL 9.6
See all 196 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences