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CVE-2017-6779

22
FAUCET Score

CVE-2017-6779 describes a denial-of-service vulnerability affecting numerous Cisco Voice Operating System (VOS)-based collaboration products, including Unified Communications Manager and Unity Connection, as well as Prime Collaboration Assurance and Provisioning. The flaw stems from a lack of size restriction on certain system log files, allowing an unauthenticated, remote attacker to exhaust disk space by sending crafted connection requests. This vulnerability carries a CVSSv3 score of 7.5 (High), indicating a network-based attack with low complexity and high impact on availability, as it can render affected systems unstable. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.5, < 10.5\(1a\)CPE matchmatch criteria
cpe:2.3:a:cisco:emergency_responder:*:*:*:*:*:*:*:*
>= 11.0, < 11.5\(4\)CPE matchmatch criteria
cpe:2.3:a:cisco:emergency_responder:*:*:*:*:*:*:*:*
>= 12.0, < 12.0su1CPE matchmatch criteria
cpe:2.3:a:cisco:emergency_responder:*:*:*:*:*:*:*:*
11.0\(1.10000.10\)CPE matchmatch criteria
cpe:2.3:a:cisco:emergency_responder:11.0\(1.10000.10\):*:*:*:*:*:*:*
>= 11.5, < 11.5\(3\)CPE matchmatch criteria
cpe:2.3:a:cisco:finesse:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.98%
Probability of exploitation in next 30 days
EPSS Percentile
78.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0198 is in the 62nd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-diskdos
Vendor Advisory