Multiple vulnerabilities in Microsoft Exchange Server
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2022-21855 CVE-2022-21969 CVE-2022-21846 |
| CWE-ID | CWE-20 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software |
Microsoft Exchange Server Server applications / Mail servers |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU59411
Risk: Medium
CVSSv4.0: 7.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Green]
CVE-ID: CVE-2022-21855
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote user on the local network can send specially crafted data to the Exchange server and execute arbitrary code on the system.
Install updates from vendor's website.
Vulnerable software versionsMicrosoft Exchange Server: 2013 RTM 15.00.0516.032 - 2019 Cumulative Update 11 15.02.0986.005
CPE2.3 External linkshttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21855
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Input validation error
EUVDB-ID: #VU59410
Risk: Medium
CVSSv4.0: 7.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Green]
CVE-ID: CVE-2022-21969
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote user to compromise the affected system.
Install updates from vendor's website.
Vulnerable software versionsMicrosoft Exchange Server: 2013 RTM 15.00.0516.032 - 2019 Cumulative Update 11 15.02.0986.005
CPE2.3https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21969
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Input validation error
EUVDB-ID: #VU59409
Risk: Medium
CVSSv4.0: 7.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Green]
CVE-ID: CVE-2022-21846
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote user on the local network can send specially crafted data to the Exchange server and execute arbitrary code on the system.
Install updates from vendor's website.
Vulnerable software versionsMicrosoft Exchange Server: 2013 RTM 15.00.0516.032 - 2019 Cumulative Update 11 15.02.0986.005
CPE2.3https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21846
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
