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CISA KEV digest

CISA KEV 08 Oct 2026: 5 exploited flaws in ProFTPD, ISC, Apache and more

5 vulnerabilities
Conceptual illustration: A balanced still life of router, workstation, browser panel and software package cube unified by a protective patch shield. Headline: MULTI-VENDOR SECURITY UPDATE.

AI-generated illustration by CyberShitty. Not a photograph or a document from the organisations named.

On 8 October 2026, CISA added 5 actively exploited vulnerabilities affecting ProFTPD, ISC, Apache, ONLYOFFICE, Strapi to its Known Exploited Vulnerabilities catalog. If you run any of these products, patch or mitigate now — exploitation is already happening.

At a glance

CVEProductRansomware useFederal deadline
CVE-2015-3306ProFTPD ProFTPDNot known
CVE-2015-5477ISC BINDNot known
CVE-2016-3081Apache StrutsNot known
CVE-2021-3199ONLYOFFICE DocsNot known
CVE-2023-22894Strapi StrapiNot known

For organisations in India

KEV deadlines bind US federal agencies only, but a listing means attackers are already using the flaw, so treat it as a patch-now signal. If one of these products in your organisation was compromised, CERT-In's directions of 28 April 2022 require service providers, intermediaries, data centres, companies and government organisations to report specified incidents within 6 hours of noticing them. How to report an incident to CERT-In.

The vulnerabilities

CVE-2015-3306Federal deadline

ProFTPD Improper Access Control Vulnerability

ProFTPD / ProFTPD / CWE-284

ProFTPD contains an improper access control vulnerability that could allow remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (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. CISA links: BOD 26-04 · Forensics Triage Requirements

CVE-2015-5477Federal deadline

ISC BIND Data Processing Errors Vulnerability

ISC / BIND / CWE-19

ISC BIND contains a data processing errors vulnerability that could allow remote attackers to cause a denial of service via TKEY queries.

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (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. CISA links: BOD 26-04 · Forensics Triage Requirements

CVE-2016-3081Federal deadline

Apache Struts Command Injection Vulnerability

Apache / Struts / CWE-77

Apache Struts contains a command injection vulnerability that could allow remote attackers to execute arbitrary code via method:prefix when Dynamic Method Invocation is enabled.

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (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. CISA links: BOD 26-04 · Forensics Triage Requirements

CVE-2021-3199Federal deadline

ONLYOFFICE Docs Server Path Traversal Vulnerability

ONLYOFFICE / Docs / CWE-22

ONLYOFFICE Docs contains a path traversal vulnerability that can occur when JWT is used, via a /.. sequence in an image upload parameter and could allow for remote code execution.

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (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. CISA links: BOD 26-04 · Forensics Triage Requirements

CVE-2023-22894Federal deadline

Strapi Cleartext Storage of Sensitive Information Vulnerability

Strapi / Strapi / CWE-312

Strapi contains a cleartext storage of sensitive information vulnerability that could allow attackers with access to the admin panel to discover sensitive user details via the query filter. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version. This vulnerability can be chained with CVE-2023-22621 to achieve remote code execution.

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (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. CISA links: BOD 26-04 · Forensics Triage Requirements