exchange server

Upgrading your Exchange estate to the latest Cumulative Update (CU) is no longer a benign maintenance task — it’s an operational imperative tied to hybrid security, enforced service changes, and survival of rich coexistence features. This battle-tested, friendly guide walks you from inventory to...

Microsoft has quietly opened a conversation with on‑prem Exchange Server administrators about whether they would welcome Copilot-style AI features in locally hosted mail environments — and the survey’s most pointed question makes clear Microsoft is actively exploring hybrid approaches that could...

Microsoft’s latest push to "Copilot all the things" has landed squarely in the laps of Exchange Server administrators: Microsoft has circulated an interest survey asking whether organizations would consider enabling Copilot for Exchange Server (on‑premises) — even if that requires sending some...

Microsoft's outreach to Exchange Server administrators — a short, targeted survey asking whether organizations would want Copilot integrated into on‑premises Exchange — is a clear signal that the company is actively exploring ways to bring its AI assistant into environments that have, until now...

Microsoft’s Exchange Team has opened a direct line to on‑premises administrators with an interest survey for Copilot for Exchange Server (on‑premises) — a clear signal that Microsoft is actively exploring ways to bring Copilot‑style AI into environments that do not fully live in Microsoft 365...

Microsoft has assigned CVE-2025-59248 to a newly disclosed spoofing vulnerability in Microsoft Exchange Server, and the vendor released security updates on October 14, 2025 that address the issue in supported Exchange builds; the flaw is described as an improper input validation problem that can...

Microsoft has published a security update addressing CVE-2025-59249, an Elevation of Privilege (EoP) vulnerability in Microsoft Exchange Server that vendors and trackers classify as high‑severity (CVSS v3.1 base score 8.8) and that Microsoft delivered fixes for as part of the October 14, 2025...

Quick clarification before I write the full 2,000+ word article: I couldn't find any public advisory or reliable references for CVE-2025-53782. The MSRC/Exchange incident most commonly referenced in mid‑/late‑2025 is CVE-2025-53786 (a hybrid Exchange → Entra ID elevation-of-privilege issue)...

Microsoft today published October 2025 Security Updates for Exchange Server — a targeted release that patches multiple vulnerabilities, finalizes the last publicly available security rollups for Exchange Server 2016 and 2019, and introduces an operational change that blocks exporting the...

Microsoft has stopped issuing support, security fixes, bug patches and time‑zone updates for Exchange Server 2016 and Exchange Server 2019 as of October 14, 2025, and organizations that continue to run these on‑premises versions now face a materially higher security, compliance, and operational...

Microsoft and Exchange teams are warning administrators about a narrow—but potentially high‑impact—Active Directory schema replication problem that can surface when an Exchange cumulative update (for example, Exchange 2019 CU15 or Exchange Server Subscription Edition RTM) extends the schema...

On October 14, 2025, support for Exchange Server 2016 and Exchange Server 2019 ends — one month from now — and organizations that delay face escalating operational risk, loss of security updates, and an increasingly narrow set of safe upgrade paths. Microsoft’s Exchange engineering team has...

Microsoft’s Exchange team published a short but important Hotfix Update (HU) rollup for September 2025 that is aimed at fixing a non‑security issue in earlier updates and, crucially, preserves support for the dedicated Exchange hybrid application workflow introduced earlier in 2025 — the update...

Microsoft’s August Patch Tuesday landed as a heavy, cross‑cutting security package that mixes high‑severity remote code execution (RCE) flaws, a publicly disclosed Kerberos elevation‑of‑privilege issue, and several cloud‑centric patches that were already mitigated on the service side—creating a...

Microsoft’s August Patch Tuesday is a heavyweight release: Redmond shipped fixes for more than a hundred security flaws, closed a clutch of high‑severity remote code execution and privilege‑escalation defects, and bundled new Windows 11 quality and AI‑adjacent features that will change how some...

Microsoft pushed its August Patch Tuesday cumulative updates on August 12–13, 2025, delivering the monthly security rollups that fix a broad range of vulnerabilities across Windows client and server platforms—most notably a publicly disclosed privilege‑escalation bug in Windows Kerberos...

Microsoft’s August Patch Tuesday delivered a heavy-duty security package this month — industry tallies vary between 107 and 111 vulnerabilities, including a publicly disclosed Kerberos elevation-of-privilege issue (CVE‑2025‑53779) and roughly a dozen other critical remote‑code‑execution (RCE)...

Microsoft’s security portal lists CVE-2025-25007 as a Microsoft Exchange Server spoofing vulnerability caused by improper validation of syntactic correctness of input, but public technical detail and third‑party analysis for this specific CVE remain sparse at the time of publication —...

Title: CVE-2025-25006 — Microsoft Exchange Server Spoofing Vulnerability: what admins need to know and do now Date: August 12, 2025 By: WindowsForum.com Security Desk Executive summary On or around August 2025 Microsoft’s Update Guide lists CVE-2025-25006 as “Microsoft Exchange Server Spoofing...

A Microsoft Security Update Guide entry for CVE-2025-33051 describes an information disclosure vulnerability affecting Microsoft Exchange Server, and the appearance of that CVE on the vendor’s advisory should put any on‑premises Exchange administrator on high alert. At the time of writing...