CVE-2016-2977

IBM Sametime Meeting Server 8.5.2 and 9.0 could allow a malicious user to lower other users hands in the meeting. IBM X-Force ID: 113937.

Published: 2017-08-29 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-2977 is rated Low Risk (37.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.94%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-2977

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.24% 0.94% +0.70%
2 2025-03-17 0.08% 0.24% +0.16%
3 2023-03-07 — 0.08% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-2977

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2016-2977

Affected software / configurations for CVE-2016-2977

Vendor Product Version Raw CPE
ibm sametime 8.5.2.0 cpe:2.3:a:ibm:sametime:8.5.2.0:*:*:*:*:*:*:*
ibm sametime 8.5.2.1 cpe:2.3:a:ibm:sametime:8.5.2.1:*:*:*:*:*:*:*
ibm sametime 9.0.0.0 cpe:2.3:a:ibm:sametime:9.0.0.0:*:*:*:*:*:*:*
ibm sametime 9.0.0.1 cpe:2.3:a:ibm:sametime:9.0.0.1:*:*:*:*:*:*:*
ibm sametime 9.0.1 cpe:2.3:a:ibm:sametime:9.0.1:*:*:*:*:*:*:*

References for CVE-2016-2977

cvelogic Threat Intelligence