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Vulnerabilities in Microsoft Exchange

🗓️ 09 Jun 2026 18:35:29Reported by NCSCType 
ncsc
 ncsc🔗 advisories.ncsc.nl👁 18 Views

Microsoft Exchange vulnerabilities allow impersonation and data access; Exchange Online CVE-2026-48579 is fixed.

Related
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-45501
9 Jun 202617:04
–attackerkb
ATTACKERKB		CVE-2026-48579
4 Jun 202622:00
–attackerkb
ATTACKERKB		CVE-2026-45503
9 Jun 202617:04
–attackerkb
BDU FSTEC		The vulnerability of Microsoft Exchange Online for corporate email services stems from deficiencies in the authentication process, which allows attackers to disclose sensitive information.
9 Jun 202600:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Exchange Server servers stems from the lack of protective measures for website structures, allowing attackers to carry out spear-phishing attacks.
15 Jun 202600:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Exchange Server’s mail server, related to insufficient validation of requests on the server side, allows attackers to disclose protected information.
17 Jun 202600:00
–bdu_fstec
BDU FSTEC		The vulnerability of the Microsoft Exchange Server mail server, related to authentication errors, allows a hacker to disclose protected information.
17 Jun 202600:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Exchange Server’s mail server, related to insufficient validation of requests on the server side, allows attackers to increase their privileges.
17 Jun 202600:00
–bdu_fstec
BDU FSTEC		The vulnerability of the Microsoft Exchange Server mail server, related to improper code generation, allows a hacker to execute arbitrary code.
17 Jun 202600:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Exchange Server servers is related to insufficient protection of the website structure, which allows attackers to carry out spear-phishing attacks.
23 Jun 202600:00
–bdu_fstec
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09 Jun 2026 18:35Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.18.1 - 9.1
EPSS0.01015
SSVC
Exchange vulnerabilitiesImpersonation riskData accessArbitrary code executionExchange Online fixOn premises
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