Amazon Web Services Latest Security Bulletins

Bulletin ID: 2026-028-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/05/08 11:30 AM PDT Description: Amazon Redshift JDBC Driver is a Type 4 JDBC driver that provides database connectivity through the standard JDBC application program interfaces (APIs). We identified an issue in Amazon Redshift JDBC Driver versions prior to 2.2.2. Under certain conditions, the driver could load and execute arbitrary classes when processing JDBC connection URL parameters. An actor who can influence the connection URL could potentially execute code in the application context. Impacted versions: Amazon Redshift JDBC Driver < 2.2.2 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

Bulletin ID: 2026-027-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/05/07 19:45 PM PDT Description: Amazon is aware of a class of issues in the Linux kernel related to the original issue (CVE-2026-31431). The issues commonly referred to as “DirtyFrag” are present in a number of loadable modules, including xfrm_user/esp4/esp6 and ipcomp4/ipcomp6. On systems that allow unprivileged users to create sockets directly or through CAP_NET_ADMIN, or allow the creation of unprivileged user namespaces (user+net), an actor may gain access to kernel memory and thus escalate their privileges. Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

Bulletin ID: 2026-026-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/05/06 17:30 PM PDT Description: Amazon is aware of an issue in the Linux kernel (CVE-2026-31431) that could potentially allow an authenticated local user to escalate privileges. With the exception of the services listed below, AWS customers are not affected. See below for specific guidance on affected services. As a best practice, AWS recommends that you apply all security patches and software version updates as soon as they become available. Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

Bulletin ID: 2026-025-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/05/04 15:30 PM PDT Description: Amazon Skylight Workspace Config Service ( slwsconfigservice) is a critical background service within Amazon WorkSpaces that manages system configuration, monitors health, and updates components. We identified CVE-2026-7791 which allows a local non-admin authenticated user to escalate privileges to SYSTEM by exploiting a race condition in the Skylight Workspace Config Service’s log file archival process. Impacted versions: < 2.6.2034.0 of the Windows Amazon Skylight Workspace Config Service (slwsconfigservice) Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

Bulletin ID: 2026-024-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/04/30 13:30 PM PDT Description: Amazon Elastic Container Service (Amazon ECS) is a fully managed container orchestration service that enables customers to deploy, manage, and scale containerized applications. The Amazon ECS agent supports mounting FSx for Windows File Server volumes in task definitions on Windows EC2 instances. We identified CVE-2026-7461, a command injection issue in FSx volume mounting that enables code execution with SYSTEM privileges via a specially crafted credentials in ECS task definitions. Impacted versions: Version 1.47.0 through 1.102.2 of the ECS Agent for Windows Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

Bulletin ID: 2026-023-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/04/29 12:30 PM PDT Description: FreeRTOS-Plus-TCP is an open source TCP/IP stack implementation designed for FreeRTOS, providing a standard Berkeley sockets interface and support for essential networking protocols including IPv6, ARP, DHCP, DNS, and Router Advertisement (RA). We identified CVE-2026-7425 and CVE-2026-7426, one of them being out-of-bounds read and another one being out-of-bounds write issues respectively in the IPv6 Router Advertisement option parser where insufficient validation of length fields allows memory operations without proper bounds checking. Either issue can be exploited by any device on the local network that can send crafted Router Advertisement packets. No authentication or user interaction is required. Impacted versions: >=V4.0.0 AND <=V4.2.5, >=V4.3.0 AND <=V4.4.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

Bulletin ID: 2026-022-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/04/29 12:20 PM PDT Description: FreeRTOS-Plus-TCP is an open-source, scalable TCP/IP stack for FreeRTOS. We identified CVE-2026-7424, where an integer underflow issue in the DHCPv6 sub-option parser could allow an adjacent network user to corrupt the device’s IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service (IP task freeze requiring hardware reset). Impacted versions: FreeRTOS-Plus-TCP >=V4.0.0 AND <=V4.2.5, >=V4.3.0 AND <= V4.4.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

Bulletin ID: 2026-021-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/04/29 12:00 PM PDT Description: FreeRTOS-Plus-TCP is a scalable, open source, and thread-safe TCP/IP stack for FreeRTOS. – CVE-2026-7422: Insufficient packet validation in the IPv4 and IPv6 receive paths allows an adjacent network device to send a packet that bypasses checksum and minimum-size validation by spoofing the Ethernet source MAC address to match one of the target device’s own registered endpoints. – CVE-2026-7423: Integer underflow in the ICMP and ICMPv6 echo reply handlers allows an adjacent network device to cause a denial of service (device crash) when outgoing ping support is enabled, because header sizes are subtracted from a packet length field without validating the field is large enough, resulting in a heap out-of-bounds read. Impacted versions: >=V4.0.0 AND <=V4.2.5, >=V4.3.0 AND <=V4.4.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

Bulletin ID: 2026-020-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/04/27 13:15 PM PDT Description: QnABot on AWS is an open-source solution that provides a multi-channel, multi-language conversational interface powered by Amazon Lex, Amazon OpenSearch Service, and optionally Amazon Bedrock. We identified CVE-2026-7191, where the improper use of the static-eval npm package may allow an authenticated administrator to execute arbitrary code within the fulfillment Lambda execution context. By injecting a crafted conditional chaining expression via the Content Designer interface, an actor with Admin access could bypass the intended expression sandbox through JavaScript prototype manipulation. Successful exploitation may grant direct access to backend resources, including Lambda environment variables, OpenSearch indices, S3 objects, and DynamoDB tables, that are not exposed through normal administrative interfaces. Impacted versions: <=7.2.4 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.