{"id":"CVE-2026-91869","kind":"vulnerability","aliases":["CVE-2026-91869"],"related":[],"title":"IBM QRadar EDR: weak rate limiting lets authenticated users bypass TOTP checks","description":"IBM Security QRadar EDR 3.12 through 3.12.26 could allow a remote authenticated attacker to bypass security restrictions due to improper rate limiting on TOTP verification.","summary":"IBM QRadar EDR versions 3.12 through 3.12.26 do not properly rate-limit TOTP verification. A remote attacker with a valid account can keep guessing one-time codes and bypass the second-factor security restriction.","severity":"high","cvss":8.1,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"IBM Security QRadar EDR","fixed":["3.12.27"],"affected":">= 3.12, <= 3.12.26","ecosystem":"vendor"}],"ecosystems":[],"tags":["authenticated","ibm-qradar-edr","mfa","network","other","reaqta","totp"],"not_affected_if":["no-valid-account","outside-affected-range"],"how_to_check":"Check the installed IBM Security QRadar EDR (ReaQta) version. Versions 3.12 through 3.12.26 are affected; 3.12.27 is fixed. If your operator subscription uses Manual approval, check for a pending update.","fix":"Upgrade IBM Security QRadar EDR to 3.12.27. The operator upgrades automatically under the default Automatic approval strategy; with Manual approval you must approve the update.","status":"open","published_at":"2026-11-13T22:17:26+00:00","first_seen_at":"2026-11-13T22:33:35+00:00","triaged_at":"2026-11-13T22:34:21+00:00","updated_at":"2026-11-13T22:37:40+00:00","category":"other","confidence":0.85,"triage":{"at":"2026-11-13T22:34:21Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"IBM QRadar EDR: weak rate limiting lets authenticated users bypass TOTP checks","impact":"medium","summary":"IBM QRadar EDR versions 3.12 through 3.12.26 do not properly rate-limit TOTP verification. A remote attacker with a valid account can keep guessing one-time codes and bypass the second-factor security restriction.","audience":"businesses","category":"other","nicknames":[],"who_cares":["ibm-qradar-edr","totp","mfa"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"attacker bypasses TOTP second factor on an account","analyst_note":"Confirm the fixed version and whether the flaw is reachable over the network; check the IBM security bulletin for CVE-2026-91869.","how_to_check":"- Check the installed QRadar EDR version against the affected range 3.12 through 3.12.26\n- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["outside-affected-range"],"who_is_affected":"Teams running IBM Security QRadar EDR 3.12 in the affected range that use TOTP as a second factor. The sources do not say which deployment or configuration is required for exposure. unknown","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000694,"input_tokens":4523,"output_tokens":483,"severity_before":"high"},"analyst_status":"done","analyst_note":"Confirm the fixed version and whether the flaw is reachable over the network; check the IBM security bulletin for CVE-2026-91869.","search":"'-2026':14A,17A '-91869':15A,18A '3.12':37B,74C '3.12.26':39B,76C 'account':54B 'allow':78C 'attack':50B,82C 'authent':8A,23B,81C 'bypass':10A,63B,84C 'check':12A 'code':61B 'could':77C 'cve':13A,16A 'due':87C 'edr':3A,22A,27B,35B,73C 'factor':67B 'guess':57B 'ibm':1A,19A,25B,33B,70C 'ibm-qradar-edr':24B 'improp':89C 'keep':56B 'let':7A 'limit':6A,45B,91C 'mfa':28B 'network':29B 'one':59B 'one-tim':58B 'proper':42B 'qradar':2A,21A,26B,34B,72C 'rate':5A,44B,90C 'rate-limit':43B 'reaqta':31B 'remot':49B,80C 'restrict':69B,86C 'second':66B 'second-factor':65B 'secur':68B,71C,85C 'security':20A 'time':60B 'totp':11A,32B,46B,93C 'user':9A 'valid':53B 'verif':47B,94C 'version':36B 'weak':4A","nicknames":[],"mitigations":[],"who_affected":"Teams running IBM Security QRadar EDR (ReaQta) 3.12 through 3.12.26. An attacker needs a valid account (low privileges) and network access to the login. They can then guess TOTP codes without being rate-limited and bypass the second factor. IBM lists no workaround. Versions 3.12.27 and later are not affected.","tier":"B","verified":{"fix":{"at":"2026-11-13T22:37:40Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-ibm-security-qradar-edr-software-has-vulnerabilities-could-allow-security-restrictions-be-bypassed-and-sensitive-information-be-disclosed","run_id":3944},"products":{"at":"2026-11-13T22:37:40Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-ibm-security-qradar-edr-software-has-vulnerabilities-could-allow-security-restrictions-be-bypassed-and-sensitive-information-be-disclosed","run_id":3944},"workarounds":{"at":"2026-11-13T22:37:40Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-ibm-security-qradar-edr-software-has-vulnerabilities-could-allow-security-restrictions-be-bypassed-and-sensitive-information-be-disclosed","run_id":3944},"how_to_check":{"at":"2026-11-13T22:37:40Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-ibm-security-qradar-edr-software-has-vulnerabilities-could-allow-security-restrictions-be-bypassed-and-sensitive-information-be-disclosed","run_id":3944},"who_affected":{"at":"2026-11-13T22:37:40Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-ibm-security-qradar-edr-software-has-vulnerabilities-could-allow-security-restrictions-be-bypassed-and-sensitive-information-be-disclosed","run_id":3944}},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":["ibmsecurityqradaredr","securityqradaredr"],"ptokens":["edr","ibm","qradar","security"],"labels":["authenticated","high","ibmqradaredr","mfa","network","other","reaqta","totp"],"campaign_type":null,"search_a":"'-2026':14A,17A '-91869':15A,18A 'authent':8A 'bypass':10A 'check':12A 'cve':13A,16A 'edr':3A,22A 'ibm':1A,19A 'let':7A 'limit':6A 'qradar':2A,21A 'rate':5A 'security':20A 'totp':11A 'user':9A 'weak':4A","search_b":"'3.12':37B '3.12.26':39B 'account':54B 'attack':50B 'authent':23B 'bypass':63B 'code':61B 'edr':27B,35B 'factor':67B 'guess':57B 'ibm':25B,33B 'ibm-qradar-edr':24B 'keep':56B 'limit':45B 'mfa':28B 'network':29B 'one':59B 'one-tim':58B 'proper':42B 'qradar':26B,34B 'rate':44B 'rate-limit':43B 'reaqta':31B 'remot':49B 'restrict':69B 'second':66B 'second-factor':65B 'secur':68B 'time':60B 'totp':32B,46B 'valid':53B 'verif':47B 'version':36B","search_c":"'3.12':74C '3.12.26':76C 'allow':78C 'attack':82C 'authent':81C 'bypass':84C 'could':77C 'due':87C 'edr':73C 'ibm':70C 'improp':89C 'limit':91C 'qradar':72C 'rate':90C 'remot':80C 'restrict':86C 'secur':71C,85C 'totp':93C 'verif':94C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-13T22:17:26+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cvss_by":"psirt@us.ibm.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91869","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91869","severity":null,"published_at":"2026-11-13T22:17:26+00:00","modified_at":"2026-11-13T22:17:26+00:00","first_seen_at":"2026-11-13T22:33:35+00:00","fetched_at":"2026-11-13T22:33:35+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-91869:3944","url":"https://www.ibm.com/support/pages/security-bulletin-ibm-security-qradar-edr-software-has-vulnerabilities-could-allow-security-restrictions-be-bypassed-and-sensitive-information-be-disclosed","severity":null,"published_at":"2026-11-13T22:37:40+00:00","modified_at":"2026-11-13T22:37:40+00:00","first_seen_at":"2026-11-13T22:37:40+00:00","fetched_at":"2026-11-13T22:37:40+00:00","note":"IBM bulletin (11 Nov 2026) confirms affected 3.12-3.12.26, fixed 3.12.27, no workarounds, network vector (AV:N, PR:L). No exploitation or PoC found; no check written (version in a running product, not repo-readable). Social search skipped (B tier, obscure).","cites":["https://www.ibm.com/support/pages/security-bulletin-ibm-security-qradar-edr-software-has-vulnerabilities-could-allow-security-restrictions-be-bypassed-and-sensitive-information-be-disclosed"]}],"documents":[{"id":150676,"url":"https://www.ibm.com/support/pages/security-bulletin-ibm-security-qradar-edr-software-has-vulnerabilities-could-allow-security-restrictions-be-bypassed-and-sensitive-information-be-disclosed","title":"IBM Security Bulletin: QRadar EDR CVE-2026-91869 / CVE-2026-91868 (fixed in 3.12.27)","kind":"advisory","source":"analyst","publisher":null,"text":null,"published_at":null,"relation":"advisory","confidence":null,"note":null}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}