Remote code execution in Microsoft Skype for Business and Lync
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-33633 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Skype for Business Server Server applications / Conferencing, Collaboration and VoIP solutions Lync Server Server applications / Other server solutions |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU65212
Risk: Low
CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-33633
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote user to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Skype for Business and Lync. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSkype for Business Server: 2015 CU12 - 2019 CU6
Lync Server: 2013 CU10
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-33633
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
