CVE-2016-3973

The chat feature in the Real-Time Collaboration (RTC) services 7.3 and 7.4 in SAP NetWeaver Java AS 7.1 through 7.5 allows remote attackers to obtain sensitive user information by visiting webdynpro/resources/sap.com/tc~rtc~coll.appl.rtc~wd_chat/Chat#, pressing "Add users", and doing a search, aka SAP Security Note 2255990.

Published: 2016-04-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-3973 is rated Moderate Risk (51.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.41%). EPSS rose +1.91% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

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-2016-3973

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 0.50% 2.41% +1.91%
2 2025-03-30 0.56% 0.50% -0.06%
3 2025-03-29 — 0.56% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-3973

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:N)
No account or special rights needed—anonymous or random user is enough.
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:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/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:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2016-3973

Affected software / configurations for CVE-2016-3973

Vendor Product Version Raw CPE
sap netweaver_application_server_java >= 7.10, <= 7.50 cpe:2.3:a:sap:netweaver_application_server_java:*:*:*:*:*:*:*:*

References for CVE-2016-3973

cvelogic Threat Intelligence