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High severity · published May 12, 2022
CVE-2021-27771
User SID can be modified resulting in an Arbitrary File Upload or deletion of directories causing a Denial of Service
7.6
CVSS
0.7%
EPSS
No
On KEV
Description
User SID can be modified resulting in an Arbitrary File Upload or deletion of directories causing a Denial of Service. When interacting in a normal matter with the Sametime chat application, users hold a cookie containing their session ID (SID). This value is also used when sending chat messages, receiving notifications and/or transferring files.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Sametime · Hcltech
11.6 · source: NVD
Affected product
SA
Sametime
Hcltech
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27771
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27771
Vendor Advisory
https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097430
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