Vulnerabilities

Cisco AsyncOS Software for Cisco Secure Email Gateway contains a SQL injection flaw (CWE-89) in its email parsing logic, caused by insufficient validation of message content. An unauthenticated, remote attacker can trigger it simply by sending a crafted email containing malicious SQL statements through an affected gateway, with no user interaction required. Successful exploitation allows arbitrary SQL execution that escalates to arbitrary operating-system command execution with root privileges, fully compromising the appliance and all mail flowing through it. Any organization running an affected version of Cisco Secure Email Gateway is impacted, and because these appliances sit on the inbound mail path they are inherently reachable over the network. There is no known public proof-of-concept, the flaw is not on the CISA KEV list, and no in-the-wild exploitation has been reported to date, though the CVSS 9.8 rating makes patching urgent.

Do: Upgrade to the fixed AsyncOS release listed in the corresponding Cisco PSIRT advisory as soon as possible, since the flaw is unauthenticated, requires no user interaction, and yields root. Until patched, apply any Cisco-documented workarounds and tightly restrict which hosts can submit mail to the gateway where operationally feasible. Review mail and system logs on these appliances for anomalies such as SQL errors in parsing, unexpected processes, or unexplained outbound connections that could indicate exploitation attempts.

IBM Langflow OSS versions 1.0.0 through 1.11.5 contain a code injection flaw (CWE-94) that occurs during graph construction, the process by which Langflow builds executable AI/agent workflow graphs. Because the CVSS 3.1 vector is network-exploitable with low complexity, no privileges, and no user interaction, a remote attacker who can reach the service can inject and execute arbitrary code on the underlying server without authenticating. Successful exploitation gives full control of the host — confidentiality, integrity, and availability are all rated high impact — and typically exposes any API keys, model credentials, or data configured in Langflow flows. All organizations running self-hosted IBM Langflow OSS in the affected range are at risk, especially instances exposed to the internet. As of now there is no known public proof of concept, no confirmed in-the-wild exploitation, and the flaw is not on the CISA KEV list, though the severity makes pre-patching attention warranted.

Do: Upgrade IBM Langflow OSS to a release newer than 1.11.5 as soon as a fixed version is available from IBM. If patching must wait, remove the instance from internet exposure (place behind a VPN or authenticated reverse proxy) since exploitation requires no credentials or user interaction. Review logs for unauthenticated requests to graph-construction/flow endpoints and for unexpected Python process or outbound network activity originating from the Langflow server.

Flowise 3.1.2 contains an improper code generation control flaw (CWE-94, code injection) in its /api/v1/prediction/ API endpoint. A remote, unauthenticated attacker can send a crafted request to this endpoint to execute arbitrary code on the server hosting Flowise, achieving full confidentiality, integrity, and availability impact (CVSS 9.8) under the application's privileges. Only version 3.1.2 is named in the available data; the full range of affected versions and any patched release are not specified. As of the provided data, the issue is not listed in CISA's KEV and no public proof-of-concept or confirmed in-the-wild exploitation is known. The critical rating reflects that the flaw is network-reachable with no privileges or user interaction required.

Do: Inventory Flowise deployments and identify any running version 3.1.2; upgrade to a patched release as soon as the vendor publishes one (no fixed version is named in the current data), and monitor the Flowise GitHub repository for an official advisory. Until patched, restrict access to /api/v1/prediction/ by enforcing authentication, binding the service to internal interfaces, or adding reverse-proxy/firewall rules. Review logs for unexpected or unauthenticated requests to that endpoint as a sign of probing or exploitation.

rclone's `serve s3` command, when configured with an --auth-proxy but without --auth-key, registers any client-chosen access key ID with an empty secret and passes that identifier to the proxy without an independent per-identity credential. An unauthenticated network attacker can send an S3 request signed via SigV4 with an arbitrary access key ID and an empty secret; because both authPairMiddleware and gofakes3 validate against that same empty secret, the signature verifies and the request is accepted. The attacker then reaches whatever backend the auth-proxy script resolves for the chosen identity, with high impact on confidentiality, integrity and availability (CVSS 9.8). Only deployments running rclone prior to 1.75.1 with `serve s3`, --auth-proxy enabled and no --auth-key are affected; other rclone configurations are not implicated. No public proof-of-concept is known and the issue is not in the CISA KEV catalog, so no confirmed exploitation has been reported.

Do: Upgrade to rclone 1.75.1 or later. If upgrading is not immediately possible, set --auth-key on `serve s3` deployments that use --auth-proxy, or restrict network access to the S3 endpoint to trusted clients. Check serve s3 access logs for successful requests using unexpected or arbitrary access key IDs, which would indicate exploitation attempts.

CVE-2026-84869 is a critical authorization flaw (CWE-862 missing authorization, CWE-269 improper privilege management) in the ScreenConnect client, the endpoint-side agent of ConnectWise's widely used remote access and remote support platform, in which files can be transferred to a machine and executed during an active remote session without the expected authorization or without confirmation by the Host (technician). It is triggered in certain circumstances during an active session, with a network attack vector, low attack complexity, low privileges required, and no user interaction per the CVSS 3.1 vector. An actor who obtains or already holds access to a session context could thereby push and run files on the managed endpoint, potentially achieving code execution with high confidentiality, integrity, and availability impact (CVSS 3.1 score 9.9, scope changed). Only endpoints running the ScreenConnect client are affected; ScreenConnect servers are not impacted, and the affected client version ranges are governed by ConnectWise security advisory AV26-903 (not enumerated in the available data). The flaw is not currently known to be exploited: it is not in CISA KEV, no public proof of concept is known, and EPSS assigns a modest 0.4% probability of exploitation within the next 30 days (32nd percentile).

Do: Follow ConnectWise security advisory AV26-903 and update ScreenConnect clients to the patched version it specifies, noting that ScreenConnect servers do not require remediation. Until patching is complete, monitor active remote sessions, require Host confirmation for file transfers, and review recent sessions on high-value endpoints for unexpected transferred or executed files; given no known exploitation and the active-session prerequisite, prioritize endpoints routinely accessed remotely.

CVE-2026-86060 is an argument-injection flaw (CWE-88) in MikroTik RouterOS's SSH login path: when a login supplies a username beginning with a prohibited character, the RouterOS login helper mishandles the argument, allowing the trusted RouterOS policy mask to be changed and privileges to be escalated. An unauthenticated attacker only needs the ability to reach the router's SSH service, since exploitation happens during the SSH login process itself. By altering the policy mask the attacker gains elevated rights on the device, and news reports indicate attackers have used this technique — including logins with usernames such as '-2' — as part of chains that take over routers without needing a password. Any RouterOS deployment running versions before the fixes (6.49.21 Long-term, 7.23.4 Long-term, 7.24.2 Stable) with SSH enabled or reachable is affected, with internet-exposed SSH at highest risk. Multiple outlets report the RouterOS flaws are being actively exploited in the wild, although no public proof-of-concept is known and the flaw is not yet in CISA KEV.

Do: Upgrade RouterOS to 6.49.21 (Long-term), 7.23.4 (Long-term) or 7.24.2 (Stable) as applicable. Until patched, restrict SSH (TCP 22) to trusted management networks or disable the SSH service if unused, and review authentication logs and user/group policy settings for tampering — reports indicate attackers log in with usernames beginning with '-' (e.g., '-2').