CVE-2021-27770 is a high-severity vulnerability (CVSS 8.8) affecting HCLTech Sametime, residing in the "FaviconService" which processes base64-encoded URLs. This flaw allows an unauthenticated attacker to achieve high impact on confidentiality, integrity, and availability with low attack complexity, likely through user interaction. Despite its severity, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), it is not listed on CISA's KEV catalog, and it shows minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
11.6CPE matchmatch criteria | cpe:2.3:a:hcltech:sametime:11.6:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.
Remediation records are not available for this CVE.