{"id":"CVE-2022-20708","kind":"vulnerability","aliases":["CVE-2022-20708"],"related":[],"title":"Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers: Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability","description":"Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.","summary":"A stack-based buffer overflow in Cisco Small Business RV160, RV260, RV340 and RV345 routers lets an attacker run code on the device. CISA lists it as actively exploited in the wild.","severity":"critical","cvss":10.0,"epss":0.14863,"exploited":true,"exploited_at":"2022-03-03T00:00:00+00:00","products":[{"name":"Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["cisco","exploited","infrastructure","rv160","rv260","rv340","rv345","small-business-routers"],"not_affected_if":["unknown"],"how_to_check":null,"fix":"Apply the Cisco firmware update per the vendor advisory; the fixed version is not stated in these sources.","status":"open","published_at":"2022-02-10T18:15:09+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:26:16+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:26:16Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Cisco firmware update per the vendor advisory; the fixed version is not stated in these sources.","reach":"unknown","impact":"high","summary":"A stack-based buffer overflow in Cisco Small Business RV160, RV260, RV340 and RV345 routers lets an attacker run code on the device. CISA lists it as actively exploited in the wild.","category":"infrastructure","who_cares":["cisco","small-business-routers","rv340","rv345","rv160","rv260"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Attacker runs arbitrary code on the router and can bypass authentication.","analyst_note":"Find the Cisco advisory and fixed firmware versions for RV160/RV260/RV340/RV345, and the preconditions for the overflow (remote vs. authenticated) via the CISA KEV entry or Cisco security advisories.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["unknown"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000486,"input_tokens":2948,"output_tokens":382,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2022':24A,27A '-20708':25A,28A 'activ':78B 'advisori':141C 'allow':97C 'and':35A 'arbitrari':107C,112C 'attack':68B,99C 'authent':115C 'author':117C 'base':19A,53B 'buffer':20A,54B 'busi':3A,13A,48B,59B,88C 'business':31A 'bypass':114C 'caus':124C 'cisa':74B 'cisco':1A,11A,29A,39B,57B,86C 'code':70B,108C 'command':113C 'could':96C 'cve':23A,26A 'denial':125C 'detail':137C 'devic':73B 'dos':128C 'elev':109C 'execut':106C,111C 'exploit':40B,79B 'fetch':119C 'follow':105C 'inform':131C 'infrastructur':41B 'let':66B 'list':75B 'multipl':83C 'overflow':21A,55B 'privileg':110C 'protect':118C 'router':10A,16A,49B,65B,95C 'routers':38A 'run':69B,121C 'rv':14A 'rv160':4A,32A,42B,60B,89C 'rv260':5A,33A,43B,61B,90C 'rv340':6A,34A,44B,62B,91C 'rv345':8A,36A,45B,64B,93C 'section':138C 'see':135C 'seri':9A,15A,94C 'series':37A 'servic':127C 'small':2A,12A,30A,47B,58B,87C 'small-business-rout':46B 'softwar':123C 'stack':18A,52B 'stack-bas':17A,51B 'unsign':122C 'vulner':22A,84C,134C 'wild':82B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2022-02-10T18:15:09+00:00","kev":{"dateAdded":"2022-03-03","dueDate":"2022-03-17","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cvss_by":"psirt@cisco.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2022-20708","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-20708","severity":null,"published_at":"2022-03-03T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T13:39:32+00:00","note":null},{"source":"epss","external_id":"CVE-2022-20708","url":"https://api.first.org/data/v1/epss?cve=CVE-2022-20708","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-2022-20708","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-20708","severity":null,"published_at":"2022-02-10T18:15:09+00:00","modified_at":"2026-06-17T04:24:54+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"}