CVE-2011-10029

HIGHNVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 50% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Weaponized
8.7EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Metasploit, ssvc poc, public exploit)
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.7Exploit: Metasploit · ssvc poc · public exploitExposed: 0

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

Solar FTP Server fails to properly handle format strings passed to the USER command. When a specially crafted string containing format specifiers is sent, the server crashes due to a read access violation in the __output_1() function of sfsservice.exe. This results in a denial of service (DoS) condition.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
80(Attend)
EG Risk 80/100SSVC: Attend

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
Severity87% × 45%
Exploitation65% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

August 20, 2025

Last Modified

April 15, 2026

Advisory Details (5)

Auto-updated Sep 1, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Solar FTP Server <= 2.1.1 Malformed USER Denial of Service | Advisories | VulnCheck

https://www.vulncheck.com/advisories/solar-ftp-server-malformed-user-dos
generic🟡 PoC Available

Solar FTP Server 2.1 - Denial of Service - Windows dos Exploit

https://www.exploit-db.com/exploits/16204
generic

Solar FTP Server - Smart Windows FTP Server For Personal Use

https://web.archive.org/web/20111102141514/https://solarftp.com/
generic

Solar FTP Server Blog » Solar FTP Server 2.1.2

https://web.archive.org/web/20111009122553/http://solarftp.com/blog/news/solar-ftp-server-2-1-2.html
generic
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/dos/windows/ftp/solarftp_user.rb

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 8× 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 114 total refreshes for this CVE.

  1. 2026-09-16 13:58 UTCEPSS rescore
  2. 2026-09-15 03:04 UTCEPSS rescore
  3. 2026-09-13 16:40 UTCEPSS rescore
  4. 2026-09-12 14:54 UTCEPSS rescore
  5. 2026-09-06 13:41 UTCEPSS rescore
  6. 2026-09-05 15:22 UTCEPSS rescore
  7. 2026-09-04 13:55 UTCEPSS rescore
  8. 2026-08-25 13:43 UTCEPSS rescore
  9. 2026-08-19 16:58 UTCEPSS rescore
  10. 2026-08-18 13:42 UTCEPSS rescore
  11. 2026-08-15 01:25 UTCEPSS rescore
  12. 2026-08-09 13:41 UTCEPSS rescore
  13. 2026-08-08 16:31 UTCEPSS rescore
  14. 2026-08-06 13:41 UTCEPSS rescore
  15. 2026-08-05 19:12 UTCEPSS rescore
  16. 2026-08-04 15:04 UTCEPSS rescore
  17. 2026-08-01 04:10 UTCEPSS rescore
  18. 2026-07-30 01:26 UTCEPSS rescore
  19. 2026-07-23 14:14 UTCEPSS rescore
  20. 2026-07-23 01:04 UTCEG score recompute
  21. 2026-07-23 00:40 UTCEG score recompute
  22. 2026-07-23 00:08 UTCEG score recompute
  23. 2026-07-22 21:47 UTCEG score recompute
  24. 2026-07-22 14:03 UTCEPSS rescore
  25. 2026-07-21 15:21 UTCEPSS rescore
Show 75 more
  1. 2026-07-20 17:03 UTCEPSS rescore
  2. 2026-07-20 17:03 UTCEPSS rescore
  3. 2026-07-19 02:25 UTCEPSS rescore
  4. 2026-07-19 02:25 UTCEPSS rescore
  5. 2026-07-18 10:00 UTCEPSS rescore
  6. 2026-07-16 16:58 UTCEPSS rescore
  7. 2026-07-15 16:54 UTCEPSS rescore
  8. 2026-07-15 16:54 UTCEPSS rescore
  9. 2026-07-15 01:55 UTCEPSS rescore
  10. 2026-07-13 22:25 UTCEPSS rescore
  11. 2026-07-13 06:08 UTCEPSS rescore
  12. 2026-07-11 08:22 UTCEPSS rescore
  13. 2026-07-11 08:22 UTCEPSS rescore
  14. 2026-07-08 15:10 UTCEPSS rescore
  15. 2026-07-08 15:10 UTCEPSS rescore
  16. 2026-07-06 16:23 UTCEPSS rescore
  17. 2026-07-06 02:19 UTCEPSS rescore
  18. 2026-07-06 02:19 UTCEPSS rescore
  19. 2026-07-05 02:26 UTCEPSS rescore
  20. 2026-07-04 06:27 UTCEPSS rescore
  21. 2026-07-02 14:01 UTCEPSS rescore
  22. 2026-07-01 15:02 UTCEPSS rescore
  23. 2026-07-01 15:02 UTCEPSS rescore
  24. 2026-06-30 23:19 UTCEPSS rescore
  25. 2026-06-30 23:19 UTCEPSS rescore
  26. 2026-06-29 14:02 UTCEPSS rescore
  27. 2026-06-28 14:03 UTCEPSS rescore
  28. 2026-06-28 04:53 UTCEPSS rescore
  29. 2026-06-28 04:52 UTCEPSS rescore
  30. 2026-06-27 03:05 UTCEPSS rescore
  31. 2026-06-27 03:05 UTCEPSS rescore
  32. 2026-06-25 13:46 UTCEPSS rescore
  33. 2026-06-24 14:02 UTCEPSS rescore
  34. 2026-06-24 14:02 UTCEPSS rescore
  35. 2026-06-23 21:30 UTCEPSS rescore
  36. 2026-06-23 21:30 UTCEPSS rescore
  37. 2026-06-22 14:22 UTCEPSS rescore
  38. 2026-06-22 14:22 UTCEPSS rescore
  39. 2026-06-21 01:56 UTCEPSS rescore
  40. 2026-06-21 01:56 UTCEPSS rescore
  41. 2026-06-19 19:22 UTCEPSS rescore
  42. 2026-06-19 19:22 UTCEPSS rescore
  43. 2026-06-18 17:49 UTCEPSS rescore
  44. 2026-06-18 17:49 UTCEPSS rescore
  45. 2026-06-17 17:49 UTCEPSS rescore
  46. 2026-06-17 17:49 UTCEPSS rescore
  47. 2026-06-17 17:49 UTCEPSS rescore
  48. 2026-06-16 17:49 UTCEPSS rescore
  49. 2026-06-15 17:44 UTCEPSS rescore
  50. 2026-06-13 22:57 UTCEPSS rescore
  51. 2026-06-13 22:57 UTCEPSS rescore
  52. 2026-06-12 23:08 UTCEPSS rescore
  53. 2026-06-11 13:56 UTCEPSS rescore
  54. 2026-06-10 22:14 UTCEPSS rescore
  55. 2026-06-10 13:17 UTCEPSS rescore
  56. 2026-06-08 15:40 UTCEG score recompute▲ 8.70
  57. 2026-06-08 15:40 UTCGHSA enrichment
  58. 2026-06-08 14:14 UTCEPSS rescore
  59. 2026-06-08 14:14 UTCEPSS rescore
  60. 2026-06-06 13:45 UTCEPSS rescore
  61. 2026-06-06 13:44 UTCEPSS rescore
  62. 2026-06-05 22:44 UTCEPSS rescore
  63. 2026-06-05 06:08 UTCEPSS rescore
  64. 2026-06-05 06:07 UTCEPSS rescore
  65. 2026-06-04 13:09 UTCEPSS rescore
  66. 2026-06-04 13:09 UTCEPSS rescore
  67. 2026-06-02 20:10 UTCEPSS rescore
  68. 2026-06-02 20:10 UTCEPSS rescore
  69. 2026-05-29 13:41 UTCEPSS rescore
  70. 2026-05-29 13:40 UTCEPSS rescore
  71. 2026-05-28 13:42 UTCEPSS rescore
  72. 2026-05-28 13:42 UTCEPSS rescore
  73. 2026-05-28 13:42 UTCEPSS rescore
  74. 2026-05-27 13:38 UTCEPSS rescore
  75. 2026-05-27 13:38 UTCEPSS rescore

Publicly available exploits

(1 reference)

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

  • Metasploitauxiliary/dos/windows/ftp/solarftp_user✓ verified
    First seen Feb 22, 2011

    Solar FTP Server Malformed USER Denial of Service

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2011-10029?
CVE-2011-10029 is a high vulnerability published on August 20, 2025. Solar FTP Server fails to properly handle format strings passed to the USER command. When a specially crafted string containing format specifiers is sent, the server crashes due to a read access violation in the output_1() function of sfsservice.exe. This results in a denial of service (DoS)…
When was CVE-2011-10029 disclosed?
CVE-2011-10029 was first published in the National Vulnerability Database on August 20, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-10029 actively exploited?
CVE-2011-10029 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 47.5% of all scored CVEs.
What is the CVSS score of CVE-2011-10029?
CVE-2011-10029 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2011-10029?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-10029, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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