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CVE-2020-16137

46
FAUCET Score

CVE-2020-16137 is a critical privilege escalation vulnerability affecting Cisco Unified IP Conference Station 7937G firmware versions 1-4-4-0 through 1-4-5-7, allowing attackers to reset SSH administrative credentials. With a CVSS score of 9.8 (CRITICAL), it presents a severe risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While Cisco notes they cannot definitively prove its existence, the vulnerability is assigned out of caution for an end-of-life product. A Metasploit module exists for this vulnerability, but there is no evidence of active exploitation, nor significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.4.4.0, <= 1.4.5.7CPE matchmatch criteria
cpe:2.3:o:cisco:unified_ip_conference_station_7937g_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
19.38%
Probability of exploitation in next 30 days
EPSS Percentile
97.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Metasploit: Cisco 7937G SSH Privilege Escalation · Jun 2, 2020
This CVE's current EPSS score of 0.1938 is in the 93rd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media 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 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/158818/Cisco-7937G-Privilege-Escalation.html
ExploitThird Party AdvisoryVDB Entry
blacklanternsecurity.com / 2020-08-07-Cisco-Unified-IP-Conference-Station-7937G
ExploitThird Party Advisory
cisco.com / c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-7940g/end_of_life_notice_c51-729487.html
Vendor Advisory