Exchange Online
Vendor:
First CVE: Jun 4, 2026 · Active for under a year
3
Total CVEs
More Total CVEs than 64% of tracked products
3.0
Avg CVEs / Year
Higher CVE frequency than 76% of tracked products
9.2
Avg CVSS
Higher Avg CVSS than 85% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Exchange Online over time
Volume of CVEsAvg CVSS Base Score
First CVE
Jun 4, 2026
51 days ago
Most Recent CVE
Jul 2, 2026
24 days ago
CVE Severity & Scoring
Exchange Online3 CVEs
33%
67%
All CVEs352,719 CVEs
45%
40%
11%
HighCritical
Attack Vector
Local0 (0.0%)
Network3 (100.0%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low3 (100.0%)
High0 (0.0%)
Unknown0 (0.0%)
User Interaction
None3 (100.0%)
Unknown0 (0.0%)
Required0 (0.0%)
Privileges Required
Low2 (66.7%)
High0 (0.0%)
None1 (33.3%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (3 CVEs).
3 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-54998HIGH Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network. | Jul 2, 2026 | 8.8 | 41 | NO | NO |
CVE-2026-48579CRITICAL Improper authorization in Microsoft Exchange Online allows an unauthorized attacker to disclose information over a network. | Jun 4, 2026 | 9.1 | 39 | NO | NO |
CVE-2026-48582CRITICAL Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network. | Jun 19, 2026 | 9.6 | 37 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (3 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (3 CVEs).
Media Mentions
Signals from CVEs in this product scope (3 CVEs).
Top CNAs Publishing CVEs For Exchange Online
Top CWEs
Versions
No cataloged versions.