Public exploit available
Public proof-of-concept or exploit code exists (ExploitDB / Metasploit / Nuclei).

CVE-2021-28480 — Prototype Pollution in Microsoft Exchange Server 2013 Cumulative Update 23

CWE-1321 — Prototype PollutionCWE-843 — Type Confusion9 documents8 sources
Severity
9.8CRITICALNVD
GHSA7.3
EPSS
86.4%
top 0.59%
CISA KEV
Not in KEV
Exploit
PoC available
Public exploit / PoC exists
Affected products
6
Microsoft Exchange Server 2013 Cumulative Update 23Microsoft Exchange Server 2016 Cumulative Update 19Microsoft Exchange Server 2016 Cumulative Update 20+3 more
Timeline
PublishedApr 13
Latest updateMay 24

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages6 packages

Patches

Patch: portal.msrc.microsoft.com ↗Patch: portal.msrc.microsoft.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-g7vr-3jq4-gwf3: Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-28481, CVE-2021-28482, CVE-2021-28483↗2022-05-24
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GHSA
Prototype Pollution in jointjs↗2021-09-22
▶
CVEList
Microsoft Exchange Server Remote Code Execution Vulnerability↗2021-04-13
▶

💥Exploits & PoCs

1
Nuclei
Microsoft Exchange - Pre-Auth SSRF / ACL Bypass (ProxyNotFound)
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📋Vendor Advisories

1
Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability↗2021-04-13
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CVE-2021-28480 — Prototype Pollution in Microsoft | cvebase