CVE-2015-4683

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 7%CVSS: 9.8Exploit: NoneExposed: 0

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

Polycom RealPresence Resource Manager (aka RPRM) before 8.4 allows attackers to obtain sensitive information and potentially gain privileges by leveraging use of session identifiers as parameters with HTTP GET requests.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
93.3%
KEV
Not listed

Published

September 19, 2017

Last Modified

May 13, 2026

Advisory Details (6)

Auto-updated Jun 21, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic
http://www.securityfocus.com/bid/75432
generic
http://www.securityfocus.com/archive/1/535852/100/0/threaded
generic🟡 PoC Available

Full Disclosure: SEC Consult SA-20150626-0 :: Critical vulnerabilities in Polycom RealPresence Resource Manager (RPRM) allow surveillance on conferences

http://seclists.org/fulldisclosure/2015/Jun/81
generic

Packet Storm

http://packetstormsecurity.com/files/132463/Polycom-RealPresence-Resource-Manager-RPRM-Disclosure-Traversal.html
generic🟡 PoC Available

Polycom RealPresence Resource Manager < 8.4 - Multiple Vulnerabilities - Hardware webapps Exploit

https://www.exploit-db.com/exploits/37449/
generic
https://support.polycom.com/global/documents/support/documentation/Security_Center_Post_for_RPRM_CVEs.pdf

Data Freshness Timeline

(refreshed 10× in last 7d / 38× 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. 2026-07-07 13:42 UTCEPSS rescore
  2. 2026-07-06 16:24 UTCEPSS rescore
  3. 2026-07-06 02:20 UTCEPSS rescore
  4. 2026-07-05 02:26 UTCEPSS rescore
  5. 2026-07-04 06:27 UTCEPSS rescore
  6. 2026-07-02 15:21 UTCEPSS rescore
  7. 2026-07-01 15:02 UTCEPSS rescore
  8. 2026-07-01 15:02 UTCEPSS rescore
  9. 2026-06-30 23:19 UTCEPSS rescore
  10. 2026-06-30 23:19 UTCEPSS rescore
  11. 2026-06-29 14:03 UTCEPSS rescore
  12. 2026-06-28 14:03 UTCEPSS rescore
  13. 2026-06-28 04:53 UTCEPSS rescore
  14. 2026-06-27 03:05 UTCEPSS rescore
  15. 2026-06-25 13:47 UTCEPSS rescore
  16. 2026-06-25 13:47 UTCEPSS rescore
  17. 2026-06-24 14:02 UTCEPSS rescore
  18. 2026-06-24 14:02 UTCEPSS rescore
  19. 2026-06-23 21:30 UTCEPSS rescore
  20. 2026-06-22 14:23 UTCEPSS rescore
  21. 2026-06-22 14:22 UTCEPSS rescore
  22. 2026-06-21 14:54 UTCEPSS rescore
  23. 2026-06-21 01:57 UTCEPSS rescore
  24. 2026-06-21 01:57 UTCEPSS rescore
  25. 2026-06-19 19:23 UTCEPSS rescore
Show 64 more
  1. 2026-06-19 19:23 UTCEPSS rescore
  2. 2026-06-18 17:50 UTCEPSS rescore
  3. 2026-06-18 17:49 UTCEPSS rescore
  4. 2026-06-17 17:49 UTCEPSS rescore
  5. 2026-06-16 17:50 UTCEPSS rescore
  6. 2026-06-16 17:49 UTCEPSS rescore
  7. 2026-06-15 17:45 UTCEPSS rescore
  8. 2026-06-14 23:14 UTCEPSS rescore
  9. 2026-06-13 22:57 UTCEPSS rescore
  10. 2026-06-12 23:09 UTCEPSS rescore
  11. 2026-06-11 13:57 UTCEPSS rescore
  12. 2026-06-10 22:15 UTCEPSS rescore
  13. 2026-06-08 14:14 UTCEPSS rescore
  14. 2026-06-07 15:22 UTCEPSS rescore
  15. 2026-06-06 13:45 UTCEPSS rescore
  16. 2026-06-05 22:44 UTCEPSS rescore
  17. 2026-06-05 06:08 UTCEPSS rescore
  18. 2026-06-05 06:08 UTCEPSS rescore
  19. 2026-06-04 13:10 UTCEPSS rescore
  20. 2026-06-04 13:09 UTCEPSS rescore
  21. 2026-06-02 20:10 UTCEPSS rescore
  22. 2026-06-02 20:10 UTCEPSS rescore
  23. 2026-05-31 22:28 UTCEPSS rescore
  24. 2026-05-31 22:28 UTCEPSS rescore
  25. 2026-05-31 22:28 UTCEPSS rescore
  26. 2026-05-31 00:14 UTCEPSS rescore
  27. 2026-05-29 13:41 UTCEPSS rescore
  28. 2026-05-28 13:42 UTCEPSS rescore
  29. 2026-05-28 13:42 UTCEPSS rescore
  30. 2026-05-27 13:38 UTCEPSS rescore
  31. 2026-05-27 13:38 UTCEPSS rescore
  32. 2026-05-26 13:41 UTCEPSS rescore
  33. 2026-05-26 13:41 UTCEPSS rescore
  34. 2026-05-26 07:16 UTCEPSS rescore
  35. 2026-05-26 07:16 UTCEPSS rescore
  36. 2026-05-24 16:43 UTCEPSS rescore
  37. 2026-05-23 15:10 UTCEPSS rescore
  38. 2026-05-22 21:15 UTCEPSS rescore
  39. 2026-05-22 21:15 UTCEPSS rescore
  40. 2026-05-21 22:40 UTCEPSS rescore
  41. 2026-05-20 22:37 UTCEPSS rescore
  42. 2026-05-20 22:37 UTCEPSS rescore
  43. 2026-05-20 11:21 UTCEPSS rescore
  44. 2026-05-20 11:21 UTCEPSS rescore
  45. 2026-05-20 11:21 UTCEPSS rescore
  46. 2026-05-20 09:12 UTCEG score recompute
  47. 2026-05-20 09:12 UTCGHSA enrichment
  48. 2026-05-20 04:56 UTCEG score recompute
  49. 2026-05-20 04:56 UTCGHSA enrichment
  50. 2026-05-20 00:40 UTCEG score recompute
  51. 2026-05-20 00:40 UTCGHSA enrichment
  52. 2026-05-19 20:24 UTCEG score recompute
  53. 2026-05-19 20:24 UTCGHSA enrichment
  54. 2026-05-19 16:08 UTCEG score recompute
  55. 2026-05-19 16:08 UTCGHSA enrichment
  56. 2026-05-19 11:51 UTCEG score recompute
  57. 2026-05-19 11:51 UTCGHSA enrichment
  58. 2026-05-19 07:32 UTCEG score recompute
  59. 2026-05-19 07:32 UTCGHSA enrichment
  60. 2026-05-19 03:16 UTCEG score recompute
  61. 2026-05-19 03:16 UTCGHSA enrichment
  62. 2026-05-18 23:01 UTCEG score recompute
  63. 2026-05-18 21:30 UTCEPSS rescore
  64. 2026-05-18 21:30 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-37449
    First seen Jun 30, 2015

    Polycom RealPresence Resource Manager < 8.4 - Multiple Vulnerabilities

    Open source ↗

Frequently asked(5)

What is CVE-2015-4683?
CVE-2015-4683 is a critical vulnerability published on September 19, 2017. Polycom RealPresence Resource Manager (aka RPRM) before 8.4 allows attackers to obtain sensitive information and potentially gain privileges by leveraging use of session identifiers as parameters with HTTP GET requests.
When was CVE-2015-4683 disclosed?
CVE-2015-4683 was first published in the National Vulnerability Database on September 19, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-4683 actively exploited?
CVE-2015-4683 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2015-4683?
CVE-2015-4683 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2015-4683?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-4683, 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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