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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 7%CVSS: 9.8Exploit: Elevated riskExposed: 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)
EG Risk
65(Track*)
EG Risk 65/100SSVC: 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%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
7%
EPSS %ILE
93%
KEV
Not listed

Published

September 19, 2017

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Jul 26, 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🟡 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
generic

Packet Storm

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× 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.

Showing the most recent 100 of 106 total refreshes for this CVE.

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

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 ↗

Related CVEs(same CWE)

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 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-2015-4683 actively exploited?
CVE-2015-4683 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7% probability of exploitation in the next 30 days, which ranks it in the top 6.6% of all scored CVEs.
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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