{"id":"CVE-2021-20028","kind":"vulnerability","aliases":["CVE-2021-20028"],"related":[],"title":"SonicWall Secure Remote Access (SRA): SonicWall Secure Remote Access (SRA) SQL Injection Vulnerability","description":"SonicWall Secure Remote Access (SRA) products contain an improper neutralization of a SQL Command leading to SQL injection.\n\nCISA required action: The impacted product is end-of-life and should be disconnected if still in use.","summary":"SonicWall Secure Remote Access (SRA) appliances contain a SQL injection flaw that lets an attacker send crafted SQL commands to the device. CISA lists it as actively exploited and tied to ransomware campaigns.","severity":"critical","cvss":9.8,"epss":0.30084,"exploited":true,"exploited_at":"2022-03-28T00:00:00+00:00","products":[{"name":"SonicWall Secure Remote Access (SRA)","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","infrastructure","ransomware","remote-access","sonicwall","sra","vpn"],"not_affected_if":["no-sra-deployed"],"how_to_check":"Identify any SonicWall SRA appliance on your network; the sources do not give a command or file to check the version.","fix":"CISA says the product is end-of-life: disconnect it if still in use and replace it. No patched version is named in the sources.","status":"open","published_at":"2021-08-04T19:15:08+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:19:45+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:19:45Z","model":"claude-haiku-5-5","output":{"fix":"CISA says the product is end-of-life: disconnect it if still in use and replace it. No patched version is named in the sources.","reach":"internet","impact":"high","summary":"SonicWall Secure Remote Access (SRA) appliances contain a SQL injection flaw that lets an attacker send crafted SQL commands to the device. CISA lists it as actively exploited and tied to ransomware campaigns.","category":"infrastructure","who_cares":["sonicwall","sra","vpn","remote-access"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Attacker runs SQL commands against the appliance database, possibly taking over the device.","analyst_note":"Confirm affected SRA versions, whether auth is required, and the vendor advisory (SonicWall PSIRT for CVE-2021-20028) since the sources give no version or fix details.","how_to_check":"Identify any SonicWall SRA appliance on your network; the sources do not give a command or file to check the version.","needs_analyst":true,"not_affected_if":["no-sra-deployed"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000489,"input_tokens":2864,"output_tokens":405,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-20028':16A,19A '-2021':15A,18A 'access':4A,9A,23A,30B,37B,70C 'action':87C 'activ':60B 'applianc':39B 'attack':48B 'campaign':66B 'cisa':56B,85C 'command':52B,80C 'contain':40B,73C 'craft':50B 'cve':14A,17A 'devic':55B 'disconnect':99C 'end':93C 'end-of-lif':92C 'exploit':25B,61B 'flaw':44B 'impact':89C 'improp':75C 'infrastructur':26B 'inject':12A,43B,84C 'lead':81C 'let':46B 'life':95C 'list':57B 'neutral':76C 'product':72C,90C 'ransomwar':27B,65B 'remot':3A,8A,29B,36B,69C 'remote':22A 'remote-access':28B 'requir':86C 'secur':2A,7A,35B,68C 'secure':21A 'send':49B 'sonicwal':1A,6A,31B,34B,67C 'sonicwall':20A 'sql':11A,42B,51B,79C,83C 'sra':5A,10A,24A,32B,38B,71C 'still':101C 'tie':63B 'use':103C 'vpn':33B 'vulner':13A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2021-08-04T19:15:08+00:00","kev":{"dateAdded":"2022-03-28","dueDate":"2022-04-18","requiredAction":"The impacted product is end-of-life and should be disconnected if still in use.","knownRansomwareCampaignUse":"Known"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2021-20028","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-20028","severity":null,"published_at":"2022-03-28T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T10:39:07+00:00","note":null},{"source":"epss","external_id":"CVE-2021-20028","url":"https://api.first.org/data/v1/epss?cve=CVE-2021-20028","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:44+00:00","fetched_at":"2026-10-23T19:13:44+00:00","note":null},{"source":"nvd","external_id":"CVE-2021-20028","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20028","severity":null,"published_at":"2021-08-04T19:15:08+00:00","modified_at":"2026-06-17T03:33:10+00:00","first_seen_at":"2026-10-23T21:57:35+00:00","fetched_at":"2026-10-23T21:57:35+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}