CVE-2015-7259

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 9.5%CVSS: 8.8Exploit: Elevated riskExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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 username and password pairs, which allows remote authenticated users to login to a target account via any of its username and password pairs.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
60
EG Risk 60/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
9.5%
EPSS %ILE
95th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 24, 2017

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 6, 2026
🔬 Proof of concept available. No fix on record yet.
generic🟡 PoC Available

ZTE ADSL ZXV10 W300 Modems - Multiple Vulnerabilities - Hardware webapps Exploit

https://www.exploit-db.com/exploits/38772/
generic

Full Disclosure: ZTE ADSL modems - Multiple vulnerabilities

http://seclists.org/fulldisclosure/2015/Nov/48
generic

Locked Out | Packet Storm

http://packetstormsecurity.com/files/134493/ZTE-ADSL-ZXV10-W300-Authorization-Disclosure-Backdoor.html
generic

Locked Out | Packet Storm

http://packetstormsecurity.com/files/134336/ZTE-ADSL-Authorization-Bypass-Information-Disclosure.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 146 total refreshes for this CVE.

  1. 2026-10-09 20:01 UTCEPSS rescore
  2. 2026-10-08 16:35 UTCEPSS rescore
  3. 2026-10-07 23:40 UTCEPSS rescore
  4. 2026-10-06 15:11 UTCEPSS rescore
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  7. 2026-09-30 14:58 UTCEPSS rescore
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  9. 2026-09-30 09:07 UTCEG score recompute
  10. 2026-09-28 13:45 UTCEPSS rescore
  11. 2026-09-27 13:40 UTCEPSS rescore
  12. 2026-09-26 15:53 UTCEPSS rescore
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  15. 2026-09-20 20:09 UTCEPSS rescore
  16. 2026-09-19 15:35 UTCEPSS rescore
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  20. 2026-09-13 16:41 UTCEPSS rescore
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  24. 2026-09-07 15:56 UTCEPSS rescore
  25. 2026-09-06 13:42 UTCEPSS rescore
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  1. 2026-09-04 13:55 UTCEPSS rescore
  2. 2026-09-02 14:07 UTCEPSS rescore
  3. 2026-09-01 13:48 UTCEPSS rescore
  4. 2026-09-01 03:31 UTCEPSS rescore
  5. 2026-08-27 14:20 UTCEPSS rescore
  6. 2026-08-26 14:41 UTCEPSS rescore
  7. 2026-08-25 13:44 UTCEPSS rescore
  8. 2026-08-23 00:13 UTCEPSS rescore
  9. 2026-08-21 23:44 UTCEPSS rescore
  10. 2026-08-20 22:50 UTCEPSS rescore
  11. 2026-08-19 16:59 UTCEPSS rescore
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  16. 2026-08-12 13:46 UTCEPSS rescore
  17. 2026-08-11 13:36 UTCEPSS rescore
  18. 2026-08-09 13:42 UTCEPSS rescore
  19. 2026-08-08 16:32 UTCEPSS rescore
  20. 2026-08-07 16:22 UTCEPSS rescore
  21. 2026-08-06 13:42 UTCEPSS rescore
  22. 2026-08-05 19:12 UTCEPSS rescore
  23. 2026-08-04 15:04 UTCEPSS rescore
  24. 2026-08-04 10:31 UTCEPSS rescore
  25. 2026-08-01 04:11 UTCEPSS rescore
  26. 2026-07-30 01:26 UTCEPSS rescore
  27. 2026-07-30 01:26 UTCEPSS rescore
  28. 2026-07-28 15:31 UTCEPSS rescore
  29. 2026-07-25 14:13 UTCEPSS rescore
  30. 2026-07-24 14:13 UTCEPSS rescore
  31. 2026-07-23 14:14 UTCEPSS rescore
  32. 2026-07-23 01:19 UTCEG score recompute
  33. 2026-07-23 00:21 UTCEG score recompute
  34. 2026-07-22 21:59 UTCEG score recompute
  35. 2026-07-22 14:04 UTCEPSS rescore
  36. 2026-07-21 15:21 UTCEPSS rescore
  37. 2026-07-21 15:21 UTCEPSS rescore
  38. 2026-07-20 17:03 UTCEPSS rescore
  39. 2026-07-19 14:27 UTCEPSS rescore
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  41. 2026-07-19 02:26 UTCEPSS rescore
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  43. 2026-07-18 10:00 UTCEPSS rescore
  44. 2026-07-16 16:59 UTCEPSS rescore
  45. 2026-07-15 16:54 UTCEPSS rescore
  46. 2026-07-15 16:54 UTCEPSS rescore
  47. 2026-07-15 01:56 UTCEPSS rescore
  48. 2026-07-13 22:26 UTCEPSS rescore
  49. 2026-07-13 22:26 UTCEPSS rescore
  50. 2026-07-12 05:42 UTCEPSS rescore
  51. 2026-07-11 08:23 UTCEPSS rescore
  52. 2026-07-09 19:05 UTCEPSS rescore
  53. 2026-07-09 19:05 UTCEPSS rescore
  54. 2026-07-08 15:10 UTCEPSS rescore
  55. 2026-07-07 13:42 UTCEPSS rescore
  56. 2026-07-07 13:42 UTCEPSS rescore
  57. 2026-07-05 02:26 UTCEPSS rescore
  58. 2026-07-04 06:28 UTCEPSS rescore
  59. 2026-07-01 15:02 UTCEPSS rescore
  60. 2026-06-30 23:19 UTCEPSS rescore
  61. 2026-06-30 23:19 UTCEPSS rescore
  62. 2026-06-29 14:03 UTCEPSS rescore
  63. 2026-06-29 14:03 UTCEPSS rescore
  64. 2026-06-28 14:04 UTCEPSS rescore
  65. 2026-06-28 04:53 UTCEPSS rescore
  66. 2026-06-27 03:05 UTCEPSS rescore
  67. 2026-06-25 13:47 UTCEPSS rescore
  68. 2026-06-25 13:47 UTCEPSS rescore
  69. 2026-06-24 14:02 UTCEPSS rescore
  70. 2026-06-24 14:02 UTCEPSS rescore
  71. 2026-06-23 21:30 UTCEPSS rescore
  72. 2026-06-22 14:23 UTCEPSS rescore
  73. 2026-06-22 14:23 UTCEPSS rescore
  74. 2026-06-21 14:54 UTCEPSS rescore
  75. 2026-06-21 14:54 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-38772
    First seen Nov 20, 2015

    ZTE ADSL ZXV10 W300 Modems - Multiple Vulnerabilities

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2015-7259?
CVE-2015-7259 is a high vulnerability published on August 24, 2017. ZTE ADSL ZXV10 W300 modems W300V2.1.0fER7PEO57 and W300V2.1.0hER7PEO57 allow user accounts to have multiple valid username and password pairs, which allows remote authenticated users to login to a target account via any of its username and password pairs.
When was CVE-2015-7259 disclosed?
CVE-2015-7259 was first published on August 24, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-7259 actively exploited?
CVE-2015-7259 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.5% probability of exploitation in the next 30 days (95th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2015-7259?
CVE-2015-7259 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2015-7259?
No fix for CVE-2015-7259 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

Dependency Blast Radius

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