How severe is CVE-2015-7257?

CVE-2015-7257 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-7257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7257?

CVE-2015-7257 primarily affects Zte Zxv10 W300 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-7257?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-7257 published?

CVE-2015-7257 was published on 2017-08-24 and last updated on 2026-06-17.

CVE-2015-7257

CVE-2015-7257 is a high-severity vulnerability in Zte Zxv10 W300 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-640.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 8.5
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-640
Affected product: Zte Zxv10 W300 Firmware
Published: 2017-08-24
Last modified: 2026-06-17

Description

ZTE ADSL ZXV10 W300 modems W300V2.1.0f_ER7_PE_O57 and W300V2.1.0h_ER7_PE_O57 allow remote authenticated non-administrator users to change the admin password by intercepting an outgoing password change request, and changing the username parameter from "support" to "admin".

Frequently asked questions

What is CVE-2015-7257?: ZTE ADSL ZXV10 W300 modems W300V2.1.0f_ER7_PE_O57 and W300V2.1.0h_ER7_PE_O57 allow remote authenticated non-administrator users to change the admin password by intercepting an outgoing password change request, and changing the username parameter from "support" to "admin".
How severe is CVE-2015-7257?: CVE-2015-7257 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-7257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7257?: CVE-2015-7257 primarily affects Zte Zxv10 W300 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-7257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-7257 published?: CVE-2015-7257 was published on 2017-08-24 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:zte:zxv10_w300_firmware:w300v2.1.0f_er7_pe_o57:*:*:*:*:*:*:*
cpe:2.3:o:zte:zxv10_w300_firmware:w300v2.1.0h_er7_pe_o57:*:*:*:*:*:*:*

More vulnerabilities in Zte Zxv10 W300 Firmware

CVE-2015-7259 — High (CVSS 8.8): ZTE ADSL ZXV10 W300 modems W300V2.1.0f_ER7_PE_O57 and W300V2.1.0h_ER7_PE_O57 allow user accounts to have multiple valid…
CVE-2015-7258 — High (CVSS 8.8): ZTE ADSL ZXV10 W300 modems W300V2.1.0f_ER7_PE_O57 and W300V2.1.0h_ER7_PE_O57 allow remote authenticated users to obtain…
CVE-2014-4018 — High (CVSS 7.8): The ZTE ZXV10 W300 router with firmware W300V1.0.0a_ZRD_LK has a default password of admin for the admin account, which…
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