CVE-2026-16526

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-30. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw in the PCP linux_sockets module exposes an unsecured internal connection. An attacker with initial code execution can exploit this to escalate privileges and execute arbitrary commands as root.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 21, 2026

Advisory Details (2)

Auto-updated Jul 30, 2026
Patch available. Sources: redhat.
redhat

2506026 – (CVE-2026-16526) CVE-2026-16526 PCP: PCP: Privilege escalation to root via linux_sockets PMDA vulnerability

https://bugzilla.redhat.com/show_bug.cgi?id=2506026
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-16526

Vendor Advisories for CVE-2026-16526(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpcp-0:7.0.3-5.el10_22026-08-17redhat
redhatpcp-0:5.3.7-22.el8_10.52026-08-17redhat
redhatpcp-0:6.3.7-8.el9_8.42026-08-17redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
pcp5.2.6-1 ... 7.2.0-1 (44 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pcp6.0.3-1.1 ... 7.2.1-2 (31 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pcp6.3.8-1 ... 7.2.1-2 (15 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
pcp6.3.8-1 ... 7.2.0-1 (14 versions)——

Weakness Classification(1)

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

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 34× in last 7d / 140× 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 234 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-16526?
CVE-2026-16526 is a high vulnerability published on July 30, 2026. A flaw in the PCP linux_sockets module exposes an unsecured internal connection. An attacker with initial code execution can exploit this to escalate privileges and execute arbitrary commands as root.
When was CVE-2026-16526 disclosed?
CVE-2026-16526 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16526 actively exploited?
CVE-2026-16526 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 61.3% of all scored CVEs.
What is the CVSS score of CVE-2026-16526?
CVE-2026-16526 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-16526?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16526, 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.

Dependency Blast Radius

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