https://vulnerability.circl.lu Contains only the most 10 recent sightings. http://www.rssboard.org/rss-specification python-feedgen en Mon, 28 Sep 2026 17:40:56 +0000 https://vulnerability.circl.lu/sighting/990bb083-5d60-44e6-b7e4-bf8dd1f88f46/export {"uuid": "990bb083-5d60-44e6-b7e4-bf8dd1f88f46", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://bsky.app/profile/r-blueteamsec.bsky.social/post/3mwl7byjmgm2r", "content": "Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778", "creation_timestamp": "2026-09-28T11:24:42.098924Z"} {"uuid": "990bb083-5d60-44e6-b7e4-bf8dd1f88f46", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://bsky.app/profile/r-blueteamsec.bsky.social/post/3mwl7byjmgm2r", "content": "Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778", "creation_timestamp": "2026-09-28T11:24:42.098924Z"} https://vulnerability.circl.lu/sighting/990bb083-5d60-44e6-b7e4-bf8dd1f88f46/export Mon, 28 Sep 2026 11:24:42 +0000 https://vulnerability.circl.lu/sighting/c3bb6172-2f6c-43e8-b0e2-744ef248876c/export {"uuid": "c3bb6172-2f6c-43e8-b0e2-744ef248876c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://bsky.app/profile/o2cloud.bsky.social/post/3mwkweluzbu2d", "content": "\ud83d\udd17 CVE : CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, CVE-2026-88778", "creation_timestamp": "2026-09-28T08:45:05.979475Z"} {"uuid": "c3bb6172-2f6c-43e8-b0e2-744ef248876c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://bsky.app/profile/o2cloud.bsky.social/post/3mwkweluzbu2d", "content": "\ud83d\udd17 CVE : CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, CVE-2026-88778", "creation_timestamp": "2026-09-28T08:45:05.979475Z"} https://vulnerability.circl.lu/sighting/c3bb6172-2f6c-43e8-b0e2-744ef248876c/export Mon, 28 Sep 2026 08:45:05 +0000 https://vulnerability.circl.lu/sighting/c14f5ac3-9503-44b6-9f1d-c2d4c086c2f8/export {"uuid": "c14f5ac3-9503-44b6-9f1d-c2d4c086c2f8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://cyber.gc.ca/en/alerts-advisories/citrix-security-advisory-av26-965", "content": "", "creation_timestamp": "2026-09-28T05:16:20.000000Z"} {"uuid": "c14f5ac3-9503-44b6-9f1d-c2d4c086c2f8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://cyber.gc.ca/en/alerts-advisories/citrix-security-advisory-av26-965", "content": "", "creation_timestamp": "2026-09-28T05:16:20.000000Z"} https://vulnerability.circl.lu/sighting/c14f5ac3-9503-44b6-9f1d-c2d4c086c2f8/export Mon, 28 Sep 2026 05:16:20 +0000 https://vulnerability.circl.lu/sighting/7c62ac2f-582e-46f4-b44b-c68b2d6fe428/export {"uuid": "7c62ac2f-582e-46f4-b44b-c68b2d6fe428", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://www.ncsc.gov.uk/news/exploitation-of-vulnerabilities-affecting-citrix-netscaler-adc-and-citrix-netscaler-gateway", "content": "", "creation_timestamp": "2026-09-28T05:00:00.000000Z"} {"uuid": "7c62ac2f-582e-46f4-b44b-c68b2d6fe428", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://www.ncsc.gov.uk/news/exploitation-of-vulnerabilities-affecting-citrix-netscaler-adc-and-citrix-netscaler-gateway", "content": "", "creation_timestamp": "2026-09-28T05:00:00.000000Z"} https://vulnerability.circl.lu/sighting/7c62ac2f-582e-46f4-b44b-c68b2d6fe428/export Mon, 28 Sep 2026 05:00:00 +0000 https://vulnerability.circl.lu/sighting/dea15696-0a60-4a57-b168-a34df6bb1815/export {"uuid": "dea15696-0a60-4a57-b168-a34df6bb1815", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://infosec.exchange/users/vuldb/statuses/117346254173339958", "content": "A new vulnerability with increased severity was disclosed for Citrix ADC and Gateway (CVE-2026-88777) https://vuldb.com/vuln/410922", "creation_timestamp": "2026-09-28T02:15:40.241155Z"} {"uuid": "dea15696-0a60-4a57-b168-a34df6bb1815", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://infosec.exchange/users/vuldb/statuses/117346254173339958", "content": "A new vulnerability with increased severity was disclosed for Citrix ADC and Gateway (CVE-2026-88777) https://vuldb.com/vuln/410922", "creation_timestamp": "2026-09-28T02:15:40.241155Z"} https://vulnerability.circl.lu/sighting/dea15696-0a60-4a57-b168-a34df6bb1815/export Mon, 28 Sep 2026 02:15:40 +0000 https://vulnerability.circl.lu/sighting/0afe4009-245c-4a17-a529-b38a5feab5fa/export {"uuid": "0afe4009-245c-4a17-a529-b38a5feab5fa", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://www.cert.si/si-cert-2026-06-kriticne-ranljivosti-v-citrix-netscaler-adc-in-gateway", "content": "", "creation_timestamp": "2026-09-28T00:56:58.000000Z"} {"uuid": "0afe4009-245c-4a17-a529-b38a5feab5fa", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://www.cert.si/si-cert-2026-06-kriticne-ranljivosti-v-citrix-netscaler-adc-in-gateway", "content": "", "creation_timestamp": "2026-09-28T00:56:58.000000Z"} https://vulnerability.circl.lu/sighting/0afe4009-245c-4a17-a529-b38a5feab5fa/export Mon, 28 Sep 2026 00:56:58 +0000 https://vulnerability.circl.lu/sighting/8051c0bb-d96d-489d-9789-921b24bbce56/export {"uuid": "8051c0bb-d96d-489d-9789-921b24bbce56", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "exploited", "source": "https://t.me/VulnerabilityNews/44636", "content": "Critical Zero-Day Vulnerabilities Exploited in Citrix NetScaler ADC, Gateway\n\nCISA is amplifying Citrix\u2019s disclosure of eight new vulnerabilities affecting Citrix NetScaler ADC and Citrix NetScaler Gateway products: CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778.\u00a0\nCISA has added CVE-2026-88771 and CVE-2026-88772 to its Known Exploited Vulnerabilities (KEV) Catalog. Both are critical, zero-day vulnerabilities that can independently enable remote code execution. CISA has received reports and partner threat intelligence confirming that threat actors are actively exploiting these vulnerabilities globally.\nBecause updating Citrix NetScaler appliances can be complex and may require downtime, CISA is issuing this Alert to help organizations assess exposure, prioritize mitigation, and account for these vulnerabilities into their risk-management activities.\u00a0\nGiven the potential consequences of successful exploitation and the fact that malicious actors are exploiting at least some of these vulnerabilities, CISA urges users and administrators to review Citrix\u2019s advisories. If possible, users are encouraged to check for indication of compromise prior to patching. Citrix has made indicators of compromise available through NetScaler Console and published additional guidance in their recent publication, Security Bulletin for CVE-2026-88771 through CVE-2026-88778, to support organizations in assessing potential compromise. Should your organization suspect compromise, it is important to preserve forensic evidence prior to applying updates, as updates may result in loss of forensic visibility.\u00a0\nCitrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771 through CVE-2026-88778 - Security Updates - Citrix Community\nCitrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778\nSteps to Take if NetScaler ADC is Suspected to be Compromised\nDisclaimer\nThe information in this report is being provided \u201cas is\u201d for informational purposes only. CISA does not endorse any commercial entity, product, company, or service, including any entities, products, or services linked within this document. Any reference to specific commercial entities, products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply endorsement, recommendation, or favoring by CISA.\nhttps://www.cisa.gov/news-events/alerts/2026/09/27/critical-zero-day-vulnerabilities-exploited-citrix-netscaler-adc-gateway", "creation_timestamp": "2026-09-27T23:00:40.000000Z"} {"uuid": "8051c0bb-d96d-489d-9789-921b24bbce56", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "exploited", "source": "https://t.me/VulnerabilityNews/44636", "content": "Critical Zero-Day Vulnerabilities Exploited in Citrix NetScaler ADC, Gateway\n\nCISA is amplifying Citrix\u2019s disclosure of eight new vulnerabilities affecting Citrix NetScaler ADC and Citrix NetScaler Gateway products: CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778.\u00a0\nCISA has added CVE-2026-88771 and CVE-2026-88772 to its Known Exploited Vulnerabilities (KEV) Catalog. Both are critical, zero-day vulnerabilities that can independently enable remote code execution. CISA has received reports and partner threat intelligence confirming that threat actors are actively exploiting these vulnerabilities globally.\nBecause updating Citrix NetScaler appliances can be complex and may require downtime, CISA is issuing this Alert to help organizations assess exposure, prioritize mitigation, and account for these vulnerabilities into their risk-management activities.\u00a0\nGiven the potential consequences of successful exploitation and the fact that malicious actors are exploiting at least some of these vulnerabilities, CISA urges users and administrators to review Citrix\u2019s advisories. If possible, users are encouraged to check for indication of compromise prior to patching. Citrix has made indicators of compromise available through NetScaler Console and published additional guidance in their recent publication, Security Bulletin for CVE-2026-88771 through CVE-2026-88778, to support organizations in assessing potential compromise. Should your organization suspect compromise, it is important to preserve forensic evidence prior to applying updates, as updates may result in loss of forensic visibility.\u00a0\nCitrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771 through CVE-2026-88778 - Security Updates - Citrix Community\nCitrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778\nSteps to Take if NetScaler ADC is Suspected to be Compromised\nDisclaimer\nThe information in this report is being provided \u201cas is\u201d for informational purposes only. CISA does not endorse any commercial entity, product, company, or service, including any entities, products, or services linked within this document. Any reference to specific commercial entities, products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply endorsement, recommendation, or favoring by CISA.\nhttps://www.cisa.gov/news-events/alerts/2026/09/27/critical-zero-day-vulnerabilities-exploited-citrix-netscaler-adc-gateway", "creation_timestamp": "2026-09-27T23:00:40.000000Z"} https://vulnerability.circl.lu/sighting/8051c0bb-d96d-489d-9789-921b24bbce56/export Sun, 27 Sep 2026 23:00:40 +0000 https://vulnerability.circl.lu/sighting/f4c5f301-e62b-48c8-af4f-10cf21bba16c/export {"uuid": "f4c5f301-e62b-48c8-af4f-10cf21bba16c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/c6o4kx2vgqy5d", "content": "CVE-2026-88777 - Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service\nCVE ID : CVE-2026-88777\n \n Published : Sept. 27, 2026, 5:16 p.m. | 58\u00a0minutes ago\n \n Description : Memory overflow vulnerability vulnerability in Citrix NetScaler...", "creation_timestamp": "2026-09-27T18:32:12.216557Z"} {"uuid": "f4c5f301-e62b-48c8-af4f-10cf21bba16c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/c6o4kx2vgqy5d", "content": "CVE-2026-88777 - Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service\nCVE ID : CVE-2026-88777\n \n Published : Sept. 27, 2026, 5:16 p.m. | 58\u00a0minutes ago\n \n Description : Memory overflow vulnerability vulnerability in Citrix NetScaler...", "creation_timestamp": "2026-09-27T18:32:12.216557Z"} https://vulnerability.circl.lu/sighting/f4c5f301-e62b-48c8-af4f-10cf21bba16c/export Sun, 27 Sep 2026 18:32:12 +0000 https://vulnerability.circl.lu/sighting/7bc3b93a-f25c-4038-836f-d09f1392a321/export {"uuid": "7bc3b93a-f25c-4038-836f-d09f1392a321", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://www.hkcert.org/security-bulletin/citrix-products-multiple-vulnerabilities_20260928", "content": "", "creation_timestamp": "2026-09-27T18:00:00.000000Z"} {"uuid": "7bc3b93a-f25c-4038-836f-d09f1392a321", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://www.hkcert.org/security-bulletin/citrix-products-multiple-vulnerabilities_20260928", "content": "", "creation_timestamp": "2026-09-27T18:00:00.000000Z"} https://vulnerability.circl.lu/sighting/7bc3b93a-f25c-4038-836f-d09f1392a321/export Sun, 27 Sep 2026 18:00:00 +0000 https://vulnerability.circl.lu/sighting/306e1816-9420-4793-ba03-cac93fea196b/export {"uuid": "306e1816-9420-4793-ba03-cac93fea196b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://infosec.exchange/users/DarkWebInformer/statuses/117344168526853624", "content": "\u203c\ufe0f Citrix has released a security bulletin regarding zero-day attacks targeting Citrix NetScaler ADC and Citrix NetScaler Gateway.\nMore info: https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096\nCVEs: CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778", "creation_timestamp": "2026-09-27T17:25:16.280684Z"} {"uuid": "306e1816-9420-4793-ba03-cac93fea196b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88777", "type": "seen", "source": "https://infosec.exchange/users/DarkWebInformer/statuses/117344168526853624", "content": "\u203c\ufe0f Citrix has released a security bulletin regarding zero-day attacks targeting Citrix NetScaler ADC and Citrix NetScaler Gateway.\nMore info: https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096\nCVEs: CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778", "creation_timestamp": "2026-09-27T17:25:16.280684Z"} https://vulnerability.circl.lu/sighting/306e1816-9420-4793-ba03-cac93fea196b/export Sun, 27 Sep 2026 17:25:16 +0000