CVE-2021-34770

🗓️ 23 Sep 2021 02:27:02Reported by ciscoType

Vulnerability in CAPWAP protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controller

Reporter	Title	Published	Views	Family All 10
Cisco	Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability	22 Sep 202116:00	–	cisco
Tenable Nessus	Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution (cisco-sa-ewlc-capwap-rce-LYgj8Kf)	22 Sep 202100:00	–	nessus
CNNVD	Cisco多款产品缓冲区错误漏洞	22 Sep 202100:00	–	cnnvd
Cvelist	CVE-2021-34770 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability	23 Sep 202102:27	–	cvelist
EUVD	EUVD-2021-21420	7 Oct 202500:30	–	euvd
NVD	CVE-2021-34770	23 Sep 202103:15	–	nvd
Prion	Input validation	23 Sep 202103:15	–	prion
The Hacker News	Cisco Releases Patches 3 New Critical Flaws Affecting IOS XE Software	24 Sep 202107:26	–	thn
ThreatPost	Critical Cisco Bugs Allow Code Execution on Wireless, SD-WAN	24 Sep 202114:01	–	threatpost
Vulnrichment	CVE-2021-34770 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability	23 Sep 202102:27	–	vulnrichment

NVD

Node

cisco ios_xeMatch-

cisco ios_xeMatch3.15.1xbs

cisco ios_xeMatch3.15.2xbs

cisco ios_xeMatch16.6.4s

cisco ios_xeMatch16.10.1

cisco ios_xeMatch16.10.1e

cisco ios_xeMatch16.10.1s

cisco ios_xeMatch16.11.1

cisco ios_xeMatch16.11.1a

cisco ios_xeMatch16.11.1b

cisco ios_xeMatch16.11.1c

cisco ios_xeMatch16.11.2

cisco ios_xeMatch16.12.1

cisco ios_xeMatch16.12.1s

cisco ios_xeMatch16.12.1t

cisco ios_xeMatch16.12.2s

cisco ios_xeMatch16.12.2t

cisco ios_xeMatch16.12.3

cisco ios_xeMatch16.12.3s

cisco ios_xeMatch16.12.4

cisco ios_xeMatch16.12.4a

cisco ios_xeMatch17.1.1

cisco ios_xeMatch17.1.1s

cisco ios_xeMatch17.1.1t

cisco ios_xeMatch17.1.2

cisco ios_xeMatch17.1.3

cisco ios_xeMatch17.2.1

cisco ios_xeMatch17.2.1a

cisco ios_xeMatch17.3.1

AND

cisco catalyst_9800Match-

cisco catalyst_9800-40Match-

cisco catalyst_9800-40_wireless_controllerMatch-

cisco catalyst_9800-80Match-

cisco catalyst_9800-80_wireless_controllerMatch-

cisco catalyst_9800-clMatch-

cisco catalyst_9800-lMatch-

cisco catalyst_9800-l-cMatch-

cisco catalyst_9800-l-fMatch-

cisco catalyst_9800_embedded_wireless_controllerMatch-

[
  {
    "product": "Cisco IOS XE Software",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

Source	Link
tools	www.tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-rce-LYgj8Kf

30 Oct 2025 21:16Current

8.8High risk

Vulners AI Score8.8

CVSS 29

CVSS 3.19.8 - 10

EPSS0.01029

SSVC