CVE-2026-6952

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH 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: 1%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(high)
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%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
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 21× in last 7d / 34× 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. 2026-07-30 01:30 UTCEPSS rescore
  2. 2026-07-29 21:54 UTCGHSA enrichment
  3. 2026-07-29 09:08 UTCGHSA enrichment
  4. 2026-07-28 20:22 UTCEG score recompute
  5. 2026-07-28 20:22 UTCGHSA enrichment
  6. 2026-07-28 15:37 UTCEPSS rescore
  7. 2026-07-28 07:36 UTCGHSA enrichment
  8. 2026-07-27 18:48 UTCEG score recompute
  9. 2026-07-27 18:48 UTCGHSA enrichment
  10. 2026-07-27 14:14 UTCEPSS rescore
  11. 2026-07-27 06:02 UTCGHSA enrichment
  12. 2026-07-26 17:12 UTCEG score recompute
  13. 2026-07-26 17:11 UTCGHSA enrichment
  14. 2026-07-26 14:54 UTCEPSS rescore
  15. 2026-07-26 04:25 UTCEG score recompute
  16. 2026-07-26 04:24 UTCGHSA enrichment
  17. 2026-07-25 14:18 UTCEPSS rescore
  18. 2026-07-24 14:18 UTCEPSS rescore
  19. 2026-07-24 14:18 UTCEPSS rescore
  20. 2026-07-23 14:18 UTCEPSS rescore
  21. 2026-07-23 14:18 UTCEPSS rescore
  22. 2026-07-23 03:22 UTCEG score recompute
  23. 2026-07-22 23:24 UTCEG score recompute
  24. 2026-07-22 23:23 UTCGHSA enrichment
  25. 2026-07-22 14:08 UTCEPSS rescore
Show 9 more
  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:25 UTCEPSS rescore
  3. 2026-07-21 15:25 UTCEPSS rescore
  4. 2026-07-21 14:08 UTCEG score recompute
  5. 2026-07-21 14:08 UTCGHSA enrichment
  6. 2026-07-21 03:51 UTCEG score recompute
  7. 2026-07-21 03:51 UTCGHSA enrichment
  8. 2026-07-21 02:17 UTCEG score recompute
  9. 2026-07-21 02:17 UTCMITRE cvelistV5first tracked

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 1% probability of exploitation in the next 30 days, which ranks it in the top 42.3% 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.

Dependency Blast Radius

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