CVE-2026-6952

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-21. a secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 7.2Exploit: None knownExposed: 0

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

A post-authentication command injection vulnerability in the "LogServer" field of the syslog component in Zyxel AX7501-B1 firmware versions through 5.17(ABPC.7.2)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device.

CVSS v3
7.2
EG Score
7.2(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity72% × 45%
Exploitation2% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
73%
KEV
Not listed

Published

July 21, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

Zyxel security advisory for post-authentication command injection vulnerability in certain DSL/Ethernet CPE, Fiber ONTs, and Wireless Extenders | Zyxel Networks

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-certain-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-07-21-2026

Vendor Advisories for CVE-2026-6952(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 81× 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 185 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6952?
CVE-2026-6952 is a high vulnerability published on July 21, 2026. A post-authentication command injection vulnerability in the "LogServer" field of the syslog component in Zyxel AX7501-B1 firmware versions through 5.17(ABPC.7.2)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device.
When was CVE-2026-6952 disclosed?
CVE-2026-6952 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6952 actively exploited?
CVE-2026-6952 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 26.8% of all scored CVEs.
What is the CVSS score of CVE-2026-6952?
CVE-2026-6952 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-6952?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6952, 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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