CVE-2017-6553

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-17. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 42%CVSS: 9.8Exploit: NoneExposed: 0

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

Buffer Overflow in Quest One Identity Privilege Manager for Unix before 6.0.0.061 allows remote attackers to obtain full access to the policy server via an ACT_ALERT_EVENT request that causes memory corruption in the pmmasterd daemon.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
98.5%
KEV
Not listed

Published

April 29, 2017

Last Modified

May 13, 2026

Advisory Details (3)

Auto-updated Jun 22, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Quest Privilege Manager - pmmasterd Buffer Overflow (Metasploit) - Linux remote Exploit

https://www.exploit-db.com/exploits/42010/
generic

Privilege Manager for Unix Hotfix 6.0.0.061 (4263401)

https://support.oneidentity.com/privilege-manager-for-unix/kb/SOL133824
generic

Multiple Vulnerabilities in Quest Privilege Manager 6.0.0.xx (CVE-2017-6553, CVE-2017-6554) | 0xDEADFACE

https://0xdeadface.wordpress.com/2017/04/07/multiple-vulnerabilities-in-quest-privilege-manager-6-0-0-xx-cve-2017-6553-cve-2017-6554/

Data Freshness Timeline

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

Publicly available exploits

(2 references)

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

  • Exploit-DBEDB-42010✓ verified
    First seen May 15, 2017

    Quest Privilege Manager - pmmasterd Buffer Overflow (Metasploit)

    Open source ↗
  • Metasploitexploit/linux/misc/quest_pmmasterd_bof✓ verified
    First seen Apr 9, 2017

    Quest Privilege Manager pmmasterd Buffer Overflow

    Open source ↗

Frequently asked(5)

What is CVE-2017-6553?
CVE-2017-6553 is a critical vulnerability published on April 29, 2017. Buffer Overflow in Quest One Identity Privilege Manager for Unix before 6.0.0.061 allows remote attackers to obtain full access to the policy server via an ACTALERTEVENT request that causes memory corruption in the pmmasterd daemon.
When was CVE-2017-6553 disclosed?
CVE-2017-6553 was first published in the National Vulnerability Database on April 29, 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-2017-6553 actively exploited?
CVE-2017-6553 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-6553?
CVE-2017-6553 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-6553?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-6553, 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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