CVE-2021-20048

🗓️ 07 Jan 2022 03:00:12Reported by sonicwallType

Stack-based buffer overflow in SonicOS SessionID HTTP response - CVE-2021-2004

Reporter	Title	Published	Views	Family All 11
BDU FSTEC	The vulnerability of the SonicOS operating system arises due to a boundary error in processing the HTTP-response header SessionID, allowing an attacker to execute arbitrary code.	31 Aug 202200:00	–	bdu_fstec
CNNVD	SonicWall SonicOS 缓冲区错误漏洞	5 Jan 202200:00	–	cnnvd
CNVD	SonicWall SonicOS Buffer Overflow Vulnerability (CNVD-2022-06901)	10 Jan 202200:00	–	cnvd
Cvelist	CVE-2021-20048	7 Jan 202203:00	–	cvelist
EUVD	EUVD-2021-7511	3 Oct 202520:07	–	euvd
NCSC	Vulnerabilities fixed in SonicOS	6 Jan 202200:00	–	ncsc
NVD	CVE-2021-20048	10 Jan 202214:10	–	nvd
OSV	CVE-2021-20048	10 Jan 202214:10	–	osv
Prion	Stack overflow	10 Jan 202214:10	–	prion
RedhatCVE	CVE-2021-20048	22 May 202521:00	–	redhatcve

NVD

Vulners

Node

sonicwall sonicosRange≤7.0.1-r1456

AND

sonicwall nsa_2650Match-

sonicwall nsa_2700Match-

sonicwall nsa_3650Match-

sonicwall nsa_3700Match-

sonicwall nsa_4650Match-

sonicwall nsa_4700Match-

sonicwall nsa_5650Match-

sonicwall nsa_6650Match-

sonicwall nsa_6700Match-

sonicwall nsa_9250Match-

sonicwall nsa_9450Match-

sonicwall nsa_9650Match-

sonicwall tz270Match-

sonicwall tz270wMatch-

sonicwall tz300Match-

sonicwall tz300pMatch-

sonicwall tz300wMatch-

sonicwall tz350Match-

sonicwall tz350wMatch-

sonicwall tz370Match-

sonicwall tz370wMatch-

sonicwall tz400Match-

sonicwall tz400wMatch-

sonicwall tz470Match-

sonicwall tz470wMatch-

sonicwall tz500Match-

sonicwall tz500wMatch-

sonicwall tz570Match-

sonicwall tz570pMatch-

sonicwall tz570wMatch-

sonicwall tz600Match-

sonicwall tz600pMatch-

sonicwall tz670Match-

Node

sonicwall sonicosRange≤7.0.1-5023-1349

AND

sonicwall nsv_10Match-

sonicwall nsv_100Match-

sonicwall nsv_1600Match-

sonicwall nsv_200Match-

sonicwall nsv_25Match-

sonicwall nsv_270Match-

sonicwall nsv_300Match-

sonicwall nsv_400Match-

sonicwall nsv_470Match-

sonicwall nsv_50Match-

sonicwall nsv_800Match-

sonicwall nsv_870Match-

Node

sonicwall sonicosRange≤7.0.1-5018-r1715

AND

sonicwall nssp_12400Match-

sonicwall nssp_12800Match-

sonicwall nssp_13700Match-

sonicwall nssp_15700Match-

Node

sonicwall sonicosRange≤6.5.4.8

AND

sonicwall nsa_2650Match-

sonicwall nsa_2700Match-

sonicwall nsa_3650Match-

sonicwall nsa_3700Match-

sonicwall nsa_4650Match-

sonicwall nsa_4700Match-

sonicwall nsa_5650Match-

sonicwall nsa_6650Match-

sonicwall nsa_6700Match-

sonicwall nsa_9250Match-

sonicwall nsa_9450Match-

sonicwall nsa_9650Match-

sonicwall soho_250wMatch-

sonicwall supermassive_9200Match-

sonicwall supermassive_9400Match-

sonicwall supermassive_9600Match-

sonicwall supermassive_9800Match-

sonicwall tz270Match-

sonicwall tz270wMatch-

sonicwall tz300Match-

sonicwall tz300pMatch-

sonicwall tz300wMatch-

sonicwall tz350Match-

sonicwall tz350wMatch-

sonicwall tz370Match-

sonicwall tz370wMatch-

sonicwall tz400Match-

sonicwall tz400wMatch-

sonicwall tz470Match-

sonicwall tz470wMatch-

sonicwall tz500Match-

sonicwall tz500wMatch-

sonicwall tz570Match-

sonicwall tz570pMatch-

sonicwall tz570wMatch-

sonicwall tz600Match-

sonicwall tz600pMatch-

sonicwall tz670Match-

Node

sonicwall sonicosRange≤6.5.1.13-1n

AND

sonicwall nssp_12400Match-

sonicwall nssp_12800Match-

sonicwall supermassive_9800Match-

Node

sonicwall sonicosRange≤6.0.5.3-94o

AND

sonicwall supermassive_e10200Match-

sonicwall supermassive_e10400Match-

sonicwall supermassive_e10800Match-

Node

sonicwall sonicosRange≤5.9.1.13

AND

sonicwall nsa_2650Match-

sonicwall nsa_2700Match-

sonicwall nsa_3650Match-

sonicwall nsa_3700Match-

sonicwall nsa_4650Match-

sonicwall nsa_4700Match-

sonicwall nsa_5650Match-

sonicwall nsa_6650Match-

sonicwall nsa_6700Match-

sonicwall nsa_9250Match-

sonicwall nsa_9450Match-

sonicwall nsa_9650Match-

sonicwall soho_250Match-

sonicwall soho_250wMatch-

sonicwall tz270Match-

sonicwall tz270wMatch-

sonicwall tz300Match-

sonicwall tz300pMatch-

sonicwall tz300wMatch-

sonicwall tz350Match-

sonicwall tz350wMatch-

sonicwall tz370Match-

sonicwall tz370wMatch-

sonicwall tz400Match-

sonicwall tz400wMatch-

sonicwall tz470Match-

sonicwall tz470wMatch-

sonicwall tz500Match-

sonicwall tz500wMatch-

[
  {
    "product": "SonicOS",
    "vendor": "SonicWall",
    "versions": [
      {
        "status": "affected",
        "version": "7.0.1-R146 and earlier"
      },
      {
        "status": "affected",
        "version": "7.0.1-5023-1349 and earlier"
      },
      {
        "status": "affected",
        "version": "7.0.1-5018-R1715 and earlier"
      },
      {
        "status": "affected",
        "version": "6.5.4.8-89n and earlier"
      },
      {
        "status": "affected",
        "version": "6.5.1.13-1n and earlier"
      },
      {
        "status": "affected",
        "version": "6.0.5.3-94o and earlier"
      },
      {
        "status": "affected",
        "version": "6.5.4.v_21s-1288 and earlier"
      },
      {
        "status": "affected",
        "version": "5.9.1.13 and earlier"
      }
    ]
  }
]

Source	Link
psirt	www.psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0028

17 Jun 2026 03:33Current

8.7High risk

Vulners AI Score8.7

CVSS 26.5

CVSS 3.18.8

EPSS0.01939