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CVE-2015-7259

36
FAUCET Score

CVE-2015-7259 describes a critical authentication bypass vulnerability in specific firmware versions of ZTE ADSL ZXV10 W300 modems, allowing multiple username/password pairs for a single account. This flaw carries a high CVSS score of 8.8, indicating a severe risk where remote authenticated attackers can gain full control over the device (confidentiality, integrity, and availability) with low attack complexity. While not listed in CISA's KEV catalog, public exploit code exists on ExploitDB, though there is minimal community discussion or media coverage surrounding this decade-old vulnerability.

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

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
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
9.46%
Probability of exploitation in next 30 days
EPSS Percentile
94.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-38772 · Nov 20, 2015
This CVE's current EPSS score of 0.0946 is in the 94th percentile among its peer group of 17,844 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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