CVE-2026-76591

HIGHPre-NVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

Score 7.4 from GitHub Security Advisory (severity: LOW) published 2026-08-20. A secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.4EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.8%CVSS: 7.4Exploit: Elevated riskExposed services: Not assessed

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

A security flaw has been discovered in TRENDnet TEW-755AP up to 20260702. This affects the function log_email_server of the file /cgi-bin/email.cgi of the component ssi. Performing a manipulation results in command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.

CVSS v3
7.4
EG Score
7.4HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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
Severity74% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
1.8%
EPSS %ILE
77th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

August 21, 2026

Advisory Details (2)

Auto-updated Aug 19, 2026
No patch confirmed yet.
generic

CVE/team15_20260702/14_755ap-ssi-cmdi/poc/poc-ssi-injection.py at main · meishigana/CVE · GitHub

https://github.com/meishigana/CVE/blob/main/team15_20260702/14_755ap-ssi-cmdi/poc/poc-ssi-injection.py
generic

CVE/team15_20260702/14_755ap-ssi-cmdi at main · meishigana/CVE · GitHub

https://github.com/meishigana/CVE/tree/main/team15_20260702/14_755ap-ssi-cmdi

Vendor Advisories for CVE-2026-76591(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 101× 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 174 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-76591?
CVE-2026-76591 is a high vulnerability published on August 19, 2026. A security flaw has been discovered in TRENDnet TEW-755AP up to 20260702. This affects the function logemailserver of the file /cgi-bin/email.cgi of the component ssi. Performing a manipulation results in command injection. The attack is possible to be carried out remotely. The exploit has been…
When was CVE-2026-76591 disclosed?
CVE-2026-76591 was first published on August 19, 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-2026-76591 actively exploited?
CVE-2026-76591 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.8% probability of exploitation in the next 30 days (77th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-76591?
CVE-2026-76591 has a CVSS base score of 7.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-76591?
No fix for CVE-2026-76591 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-76591 are linked in the Vendor Advisories panel on this page.

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