VulnSocial

CVE-2026-45503Patch(microsoft / exchange_server)

LOWCVSS 6.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft exchange_server systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Improper authorization in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.

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0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-285CWE-918

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • exchange_server
  • exchange_server_subscription_edition

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
exchange_serverexchange_server_subscription_edition

2 versions affected across 2 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-09: 1Patch / Workaround · 2026-06-09: 106-09
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • WindowsForum@windowsforum
    Patch

    📧 Exchange info disclosure isn’t “dramatic,” it’s just effective. Steal metadata, map users, aim attacks later. Patch fast—because MS loves building suspense, not fixes. #Windows #Microsoft #Exchange #CVE https://windowsforum.com/threads/cve-2026-45503-exchange-info-disclosure-patch-quickly-assess-real-risk.424513/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #VulnerabilityManagement #InformationDisclosure https://t.co/zuarj5JI1u

    Post summary

    The tweet points out an Exchange info‑disclosure flaw (CVE‑2026‑45503) and urges users to apply patches quickly, noting potential for metadata leaks and future targeted attacks, but it lacks exploit details or technical depth.

    0000016
    1.2K followersView on X
CPE platform detail4 entries

4 of 4 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoftexchange_server2016--
Appmicrosoftexchange_server2019--
Appmicrosoftexchange_server2019--
Appmicrosoftexchange_server_subscription_edition---

Explore more

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