CVE-2015-20121

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 65% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

Next Click Ventures RealtyScript 4.0.2 contains SQL injection vulnerabilities that allow unauthenticated attackers to manipulate database queries by injecting arbitrary SQL code through the GET parameter 'u_id' in /admin/users.php and the POST parameter 'agent[]' in /admin/mailer.php. Attackers can exploit time-based blind SQL injection techniques to extract sensitive database information or cause denial of service through sleep-based payloads.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

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
Severity98% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

March 16, 2026

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Sep 16, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

RealtyScript 4.0.2 SQL Injection via u_id and agent Parameters | Advisories | VulnCheck

https://www.vulncheck.com/advisories/realtyscript-sql-injection-via-u-id-and-agent-parameters
generic🟡 PoC Available

RealtyScript 4.0.2 - Multiple Blind SQL Injections - PHP webapps Exploit

https://www.exploit-db.com/exploits/38497
generic🔴 Active Exploitation

Zero Science Lab — Information Security Research & Development Laboratory

http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5270.php

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 18× 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.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2015-20121?
CVE-2015-20121 is a critical vulnerability published on March 16, 2026. Next Click Ventures RealtyScript 4.0.2 contains SQL injection vulnerabilities that allow unauthenticated attackers to manipulate database queries by injecting arbitrary SQL code through the GET parameter 'u_id' in /admin/users.php and the POST parameter 'agent[]' in /admin/mailer.php. Attackers can…
When was CVE-2015-20121 disclosed?
CVE-2015-20121 was first published in the National Vulnerability Database on March 16, 2026, 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-2015-20121 actively exploited?
CVE-2015-20121 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.2% of all scored CVEs.
What is the CVSS score of CVE-2015-20121?
CVE-2015-20121 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2015-20121?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-20121, 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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