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CVE-2015-7257

31
FAUCET Score

CVE-2015-7257 describes a critical vulnerability in ZTE ADSL ZXV10 W300 modems (specific firmware versions) allowing authenticated non-administrator users to hijack the administrator account. This is achieved by intercepting a password change request and manipulating the username from "support" to "admin." With a CVSS score of 7.5 (HIGH), this vulnerability presents a significant risk due to its network-based attack vector, low privileges required, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or Metasploit/Nuclei modules, an ExploitDB entry exists, and despite its age, the high FAUCET Risk Score suggests its potential for impact.

Impacted Technologies

VendorProductVersion(s)CPE
w300v2.1.0f_er7_pe_o57CPE matchmatch criteria
cpe:2.3:o:zte:zxv10_w300_firmware:w300v2.1.0f_er7_pe_o57:*:*:*:*:*:*:*
w300v2.1.0h_er7_pe_o57CPE matchmatch criteria
cpe:2.3:o:zte:zxv10_w300_firmware:w300v2.1.0h_er7_pe_o57:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
6.71%
Probability of exploitation in next 30 days
EPSS Percentile
93.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-38772 · Nov 20, 2015
This CVE's current EPSS score of 0.0671 is in the 93rd percentile among its peer group of 1,162 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.1 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/134336/ZTE-ADSL-Authorization-Bypass-Information-Disclosure.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/134493/ZTE-ADSL-ZXV10-W300-Authorization-Disclosure-Backdoor.html
Third Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2015/Nov/48
Mailing ListThird Party Advisory
exploit-db.com / exploits/38772
Third Party AdvisoryVDB Entry