{"vulnerability": "CVE-2021-3199", "sightings": [{"uuid": "d3137377-d074-45db-931a-f52c1391f236", "vulnerability_lookup_origin": "405284c2-e461-4670-8979-7fd2c9755a60", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3199", "type": "exploited", "source": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/c8c93212-d627-4840-a6e9-4a4e261fe139", "content": "", "creation_timestamp": "2026-10-08T18:00:02.751135Z"}, {"uuid": "742db593-b709-4eb8-a1f4-d370c9cd8abd", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3199", "type": "seen", "source": "https://bsky.app/profile/cvesentinel.bsky.social/post/3mxf22yrrpq26", "content": "\ud83d\uded1 CVE-2021-3199\nONLYOFFICE Docs\nCVSS 9.8 / EPSS 8% / KEV: No\nTL;DR: Directory traversal with remote code execution can occur in /upload in ONLYOFFICE Document Se\u2026\nhttps://cvesentinel.com/report/CVE-2021-3199?utm_source=bluesky&utm_medium=social&utm_campaign=cvesentinel\n#infosec #CVE #vulnerability", "creation_timestamp": "2026-10-08T18:00:31.977259Z"}, {"uuid": "f2bb22ee-7473-482c-9a8e-fd3fa362cf10", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3199", "type": "seen", "source": "https://bsky.app/profile/aipostdaily.bsky.social/post/3mxf35wyhky2l", "content": "CISA added CVE-2021-3199 to its Known Exploited Vulnerabilities list (2026-10-08).\nONLYOFFICE Docs Server Path Traversal\nEPSS 30 days before listing: 0.082 \u00b7 today: 0.082\n#infosec #KEV", "creation_timestamp": "2026-10-08T18:20:05.205107Z"}, {"uuid": "eb321fa6-6426-4183-aedf-597ccce65990", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3199", "type": "seen", "source": "https://bsky.app/profile/ninjaintelgroup.bsky.social/post/3mxf6bvfdsc2a", "content": "\ud83d\udea8 NEW on CISA KEV \u2014 exploited in the wild\nONLYOFFICE Docs: ONLYOFFICE Docs Server Path Traversal Vulnerability\nCVE-2021-3199 \u00b7 patch by 2026-10-11\n\ud83d\udd17 https://ninjasignal.ninja/intel/cve/CVE-2021-3199\n#KEV #cybersecurity #infosec", "creation_timestamp": "2026-10-08T19:15:57.932667Z"}, {"uuid": "6a60eb96-7508-4624-a84a-d983b928efb7", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3199", "type": "seen", "source": "https://infosec.exchange/users/secdb/statuses/117406827249675241", "content": "\ud83d\udea8 [CISA-2026:1008] CISA Adds 5 Known Exploited Vulnerabilities to Catalog (https://secdb.nttzen.cloud/security-advisory/detail/CISA-2026:1008)\nCISA has added 5 new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risk to the federal enterprise.\n\u26a0\ufe0f CVE-2015-3306 (https://secdb.nttzen.cloud/cve/detail/CVE-2015-3306)- Name: ProFTPD Improper Access Control Vulnerability- Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.- Known To Be Used in Ransomware Campaigns? Unknown- Vendor: ProFTPD- Product: ProFTPD- Notes: This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: http://www.proftpd.org/ ; https://lists.debian.org/debian-security-announce/2015/msg00154.html ; https://lists.opensuse.org/archives/list/updates@lists.opensuse.org/message/WE6YZRG5UVXMGQ7IVDRYBPIWV4M6UUGM/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2015-3306\n\u26a0\ufe0f CVE-2015-5477 (https://secdb.nttzen.cloud/cve/detail/CVE-2015-5477)- Name:  ISC BIND Data Processing Errors Vulnerability- Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.- Known To Be Used in Ransomware Campaigns? Unknown- Vendor: ISC- Product: BIND- Notes: This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://web.archive.org/web/20150729014733/https://kb.isc.org/article/AA-01272 ; https://access.redhat.com/errata/RHSA-2015:1513.html; https://supportportal.juniper.net/s/article/2016-01-Security-Bulletin-Junos-Vulnerability-in-ISC-BIND-named-CVE-2015-5477 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2015-5477\n\u26a0\ufe0f CVE-2016-3081 (https://secdb.nttzen.cloud/cve/detail/CVE-2016-3081)- Name: Apache Struts Command Injection Vulnerability- Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.- Known To Be Used in Ransomware Campaigns? Unknown- Vendor: Apache- Product: Struts- Notes: This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://cwiki.apache.org/confluence/display/WW/S2-032 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2016-3081\n\u26a0\ufe0f CVE-2021-3199 (https://secdb.nttzen.cloud/cve/detail/CVE-2021-3199)- Name: ONLYOFFICE Docs Server Path Traversal Vulnerability- Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.- Known To Be Used in Ransomware Campaigns? Unknown- Vendor: ONLYOFFICE- Product: Docs- Notes: This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: ; https://github.com/ONLYOFFICE/DocumentServer/blob/903fe5ab7a275bd69c3c3346af2d21cf87ebeabf/CHANGELOG.md#563 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2021-3199\n\u26a0\ufe0f CVE-2023-22894 (https://secdb.nttzen.cloud/cve/detail/CVE-2023-22894)- Name: Strapi Cleartext Storage of Sensitive Information Vulnerability- Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.- Known To Be Used in Ransomware Campaigns? Unknown- Vendor: Strapi- Product: Strapi- Notes: This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://strapi.io/blog/security-disclosure-of-vulnerabilities-cve ; https://github.com/strapi/strapi/releases ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2023-22894\n#ZEN #SecDB #InfoSec #CVE #CISA_KEV #cisa_20261008 #cisa20261008 #cve_2015_3306 #cve_2015_5477 #cve_2016_3081 #cve_2021_3199 #cve_2023_22894 #cve20153306 #cve20155477 #cve20163081 #cve20213199 #cve202322894", "creation_timestamp": "2026-10-08T20:05:51.126281Z"}, {"uuid": "902f16cc-b4c2-4d9b-9d54-dcb164e371e1", "vulnerability_lookup_origin": "caeb2787-0d58-4236-9039-7c86c3e566f3", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3199", "type": "exploited", "source": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/b595ae6e-79f5-4edb-ba91-cbc3b9b8c12f", "content": "", "creation_timestamp": "2026-10-09T06:14:13.039320Z"}, {"uuid": "ce53c991-757d-4a34-86d7-f2322c306af9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3199", "type": "seen", "source": "https://bsky.app/profile/threatspotai.bsky.social/post/3mxgdzigqcw2x", "content": "\ud83d\udea8 CISA KEV Alert\nCVE-2021-3199: \u26a0\ufe0f CVE-2021-3199: New Actively Exploited Vulnerability Added to CISA KEV\nSeverity: HIGH | CVSS: 0.0 | EPSS: 8.2%\nActively exploited\n\nRead the full alert: https://threatspot.ai/alerts/2021-3199-directory-traversal-with-remote-code-execution", "creation_timestamp": "2026-10-09T06:31:18.185328Z"}, {"uuid": "6270f4e7-591c-4205-9f11-382d85ce7fc9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3199", "type": "seen", "source": "https://bsky.app/profile/cybowl.bsky.social/post/3mxghb6xttr2g", "content": "\ud83d\udd34 Exploitation confirm\u00e9e (CISA KEV, ajouts du 08/10) \u00b7 5\n\u2022 ProFTPD CVE-2015-3306, CVSS 10.0\n\u2022 ISC BIND CVE-2015-5477, CVSS 7.5\n\u2022 Apache Struts CVE-2016-3081, CVSS 8.1\n\u2022 ONLYOFFICE Docs CVE-2021-3199, CVSS 9.8\n\u2022 Strapi CVE-2023-22894, CVSS 4.9", "creation_timestamp": "2026-10-09T07:29:18.122954Z"}, {"uuid": "e0f86139-da75-48ad-b087-a4d9cf3549bd", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3199", "type": "seen", "source": "https://bsky.app/profile/csirts.com/post/3mxgmpoar762b", "content": "\ud83d\udea8 Added to CISA KEV \u2014 actively exploited:\nCVE-2021-3199: ONLYOFFICE Docs Server Path Traversal Vulnerability\n\nhttps://www.csirts.com/cve/CVE-2021-3199", "creation_timestamp": "2026-10-09T09:06:52.774398Z"}]}