patch guidance

Oracle’s MySQL Server contains a stability flaw in its query optimizer that can be triggered remotely by a low‑privileged, network‑accessible account to hang or repeatedly crash the server process, producing a reliable denial‑of‑service condition for affected MySQL instances. Background /...

Oracle’s MySQL Server contains a denial-of-service weakness in the Server: Optimizer component (tracked as CVE-2024-21171) that can be triggered remotely by a low‑privilege, network‑connected MySQL account to cause the server to hang or repeatedly crash, producing a complete loss of availability...

A newly disclosed flaw in Oracle MySQL’s replication component — tracked as CVE-2025-53023 — can be leveraged by a high‑privilege actor with network access to cause repeated hangs or crashes of the MySQL server, producing a sustained or persistent denial‑of‑service (DoS) condition for affected...

MariaDB ships a subtle but dangerous crash in its query planner: CVE‑2023‑52971 causes servers running MariaDB 10.10 → 10.11. and 11.0 → 11.4. to abort when the planner’s JOIN rewriting routine enters a broken state inside JOIN::fix_all_splittings_in_plan, producing immediate and repeatable...

Oracle’s MySQL Server has a denial‑of‑service vulnerability in the Server: Optimizer component (tracked as CVE‑2025‑50091) that affects a wide swath of modern releases and can be triggered remotely by high‑privileged MySQL accounts to repeatedly crash or hang the server, producing a total loss...

Oracle’s MySQL Server was flagged in July 2025 with a denial‑of‑service vulnerability that can be triggered remotely and repeatedly, taking MySQL instances offline and disrupting applications that depend on them. The flaw—tracked as CVE‑2025‑50078—affects a wide span of supported MySQL releases...

Redis administrators need to act now: a denial-of-service flaw tracked as CVE‑2025‑48367 allows an unauthenticated network connection to trigger repeated connection-level errors that can starve legitimate clients and render Redis instances unavailable until patched or otherwise mitigated. The...

Oracle’s MySQL Server was assigned CVE‑2025‑50084 in July 2025 — a denial‑of‑service weakness in the Server: Optimizer component that affects a broad range of production releases and demands immediate operational attention from DBAs and platform teams. The bug allows a high‑privileged actor with...

A denial-of-service flaw in SQLite 3.25.2 — tracked as CVE-2018-20505 — can be triggered by queries run against a table with a malformed PRIMARY KEY, allowing an attacker who can inject SQL (for example via certain WebSQL scenarios) to crash the host application and deny service to users...

A deep, remotely exploitable flaw in ISC BIND 9’s control-channel parsing can exhaust a process’s stack and crash the DNS daemon named, allowing attackers with network access to the control port to trigger a denial-of-service condition unless systems are patched or access is restricted...

A subtle NULL‑pointer bug in the Linux kernel’s IPv4 routing code — tracked as CVE‑2024‑36008 — was patched in mid‑2024 after syzbot triggered a NULL dereference in fib_validate_source() that can crash a system processing IPv4 packets; the issue is real, reproducible in some configurations, and...

A critical memory-safety flaw in the widely used cJSON library has been assigned CVE-2025-57052: a logic error in the array-index parsing code lets malformed JSON pointer strings bypass bounds checks, enabling out‑of‑bounds memory access that can crash or corrupt applications that rely on cJSON...

Microsoft has assigned CVE‑2026‑21532 to an information‑disclosure vulnerability that affects Azure Functions; the entry in Microsoft’s Security Update Guide confirms the vulnerability exists but — at the time of publication — supplies only a high‑level classification and a vendor confidence...

Microsoft’s Security Update Guide now records CVE-2026-20871 as a Desktop Window Manager (DWM) elevation‑of‑privilege issue, and the vendor’s published “confidence” signal must be read as an operational triage cue: treat the CVE as a confirmed, high‑value local EoP that requires immediate...

Microsoft’s security advisory listing for CVE-2026-21219 identifies a remote code execution risk in the Windows Inbox COM Objects (Global Memory) code paths — a family of memory-safety defects that Microsoft has acknowledged and for which vendor updates are the recommended remediation...

Microsoft has recorded CVE-2026-20862 as an information disclosure vulnerability in Windows Management Services (WMS), and the vendor’s terse public advisory — delivered via the Microsoft Security Response Center’s Update Guide — makes this a high-priority operational problem for administrators...

Microsoft’s tracking entry and community patch lists show that CVE-2026-20934 is a newly recorded Windows SMB Server elevation-of-privilege vulnerability that administrators must treat as a high-priority remediation item until their environments are validated patched or mitigated. Evidence in...

Microsoft has recorded CVE-2026-20877 as an elevation‑of‑privilege vulnerability tied to Windows Management Services (WMS), and the vendor’s sparse public advisory — coupled with Microsoft’s “confidence” metric — demands immediate, measured attention from administrators responsible for...

Microsoft’s Security Update Guide records CVE-2026-20877 as an Elevation of Privilege (EoP) defect in Windows Management Services — a vendor-classified local‑attack vulnerability that, if successfully weaponized, can allow a low‑privilege process or local user to gain higher privileges on an...

Microsoft has recorded CVE-2026-20876 — a Virtualization‑Based Security (VBS) enclave vulnerability that Microsoft classifies as an elevation‑of‑privilege risk and has published an Update Guide entry directing administrators to map the CVE to specific KBs and apply vendor fixes immediately...