CVE-2026-9177

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 79% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:toreon, epss
Trending — 3 sources updated this week
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.4Exploit: None knownExposed: 0

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

A Server-Side Template Injection (SSTI) vulnerability was identified in the mail template functionality of the Axway SecureTransport product in version 5.5-20260326. This flaw allows an attacker with admin privileges to inject arbitrary Java code expressions, which are executed server-side when the template is rendered (i.e., during email sending). Successful exploitation of this flaw allows an attacker to execute arbitrary code on the server that results in full host compromise.

This issue affects all Axway SecureTransport versions prior 5.5-20260528 update.

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity94% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 31, 2026

Advisory Details (3)

Auto-updated Aug 22, 2026
No patch confirmed yet.
generic

CVE-2026-9177: SSTI in SecureTransport MFT Gateway | My Pentesting Space

https://docs.hackjiji.org/blog/cve-2026-9177-ssti-in-securetransport-mft-gateway
generic

CVE-2026-9177

https://www.toreon.com/CVE-2026-9177
generic
https://support.axway.com/news/4882/lang/en

Vendor Advisories for CVE-2026-9177(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 51× in last 7d / 212× 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 212 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-9177?
CVE-2026-9177 is a critical vulnerability published on July 29, 2026. A Server-Side Template Injection (SSTI) vulnerability was identified in the mail template functionality of the Axway SecureTransport product in version 5.5-20260326. This flaw allows an attacker with admin privileges to inject arbitrary Java code expressions, which are executed server-side when the…
When was CVE-2026-9177 disclosed?
CVE-2026-9177 was first published in the National Vulnerability Database on July 29, 2026, with the most recent update on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9177 actively exploited?
CVE-2026-9177 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 79.2% of all scored CVEs.
What is the CVSS score of CVE-2026-9177?
CVE-2026-9177 has a CVSS v4.0 base score of 9.4 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-9177?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9177, 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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