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CVE-2018-15557

27
FAUCET Score

CVE-2018-15557 describes a critical vulnerability in the Quantenna WiFi Controller on Telus Actiontec WEB6000Q v1.1.02.22 devices, allowing an attacker to gain root access. By statically configuring their IP address within the 169.254.1.0/24 subnet, an attacker can connect to 169.254.1.2 on port 23 via Telnet or Netcat to achieve full system compromise. This vulnerability carries a high CVSS score of 8.8, indicating a severe risk due to its adjacent network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) or significant community discussion has been identified.

Impacted Technologies

VendorProductVersion(s)CPE
1.1.02.22CPE matchmatch criteria
cpe:2.3:o:actiontec:web6000q_firmware:1.1.02.22:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.26%
Probability of exploitation in next 30 days
EPSS Percentile
87.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0326 is in the 92nd percentile among its peer group of 1,857 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 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/153262/Telus-Actiontec-WEB6000Q-Privilege-Escalation.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2019/Jun/2
Mailing ListThird Party Advisory