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 78% 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
22%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 31, 2026

Advisory Details (3)

Auto-updated Sep 14, 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 36× in last 7d / 150× 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 321 total refreshes for this CVE.

  1. 2026-09-19 04:55 UTCGHSA enrichment
  2. 2026-09-19 00:05 UTCGHSA enrichment
  3. 2026-09-18 19:40 UTCEG score recompute
  4. 2026-09-18 19:40 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 15:17 UTCGHSA enrichment
  7. 2026-09-18 10:27 UTCGHSA enrichment
  8. 2026-09-18 06:05 UTCGHSA enrichment
  9. 2026-09-18 01:42 UTCEG score recompute
  10. 2026-09-18 01:42 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-17 06:15 UTCGHSA enrichment
  13. 2026-09-17 01:36 UTCEG score recompute
  14. 2026-09-17 01:36 UTCGHSA enrichment
  15. 2026-09-16 14:09 UTCEPSS rescore
  16. 2026-09-16 11:49 UTCGHSA enrichment
  17. 2026-09-16 05:49 UTCEG score recompute
  18. 2026-09-16 05:49 UTCGHSA enrichment
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-15 08:07 UTCEG score recompute
  21. 2026-09-15 08:07 UTCGHSA enrichment
  22. 2026-09-15 03:12 UTCEPSS rescore
  23. 2026-09-14 15:38 UTCGHSA enrichment
  24. 2026-09-14 11:16 UTCGHSA enrichment
  25. 2026-09-14 06:54 UTCGHSA enrichment
Show 75 more
  1. 2026-09-14 02:32 UTCGHSA enrichment
  2. 2026-09-13 22:10 UTCGHSA enrichment
  3. 2026-09-13 17:27 UTCEG score recompute
  4. 2026-09-13 17:27 UTCGHSA enrichment
  5. 2026-09-13 16:48 UTCEPSS rescore
  6. 2026-09-13 13:05 UTCGHSA enrichment
  7. 2026-09-13 08:43 UTCGHSA enrichment
  8. 2026-09-13 04:21 UTCGHSA enrichment
  9. 2026-09-12 23:59 UTCGHSA enrichment
  10. 2026-09-12 18:14 UTCEG score recompute
  11. 2026-09-12 18:14 UTCGHSA enrichment
  12. 2026-09-12 15:02 UTCEPSS rescore
  13. 2026-09-12 13:51 UTCGHSA enrichment
  14. 2026-09-12 09:29 UTCGHSA enrichment
  15. 2026-09-12 05:00 UTCGHSA enrichment
  16. 2026-09-12 00:38 UTCGHSA enrichment
  17. 2026-09-11 19:32 UTCGHSA enrichment
  18. 2026-09-11 15:06 UTCEG score recompute
  19. 2026-09-11 15:06 UTCGHSA enrichment
  20. 2026-09-11 14:53 UTCEPSS rescore
  21. 2026-09-11 09:38 UTCEPSS rescore
  22. 2026-09-11 06:33 UTCGHSA enrichment
  23. 2026-09-11 01:25 UTCGHSA enrichment
  24. 2026-09-10 19:52 UTCGHSA enrichment
  25. 2026-09-10 13:05 UTCEG score recompute
  26. 2026-09-10 13:05 UTCGHSA enrichment
  27. 2026-09-10 09:35 UTCEPSS rescore
  28. 2026-09-10 07:14 UTCGHSA enrichment
  29. 2026-09-09 12:11 UTCGHSA enrichment
  30. 2026-09-09 07:49 UTCEG score recompute
  31. 2026-09-09 07:49 UTCGHSA enrichment
  32. 2026-09-08 22:01 UTCEPSS rescore
  33. 2026-09-08 01:12 UTCGHSA enrichment
  34. 2026-09-07 20:50 UTCEG score recompute
  35. 2026-09-07 20:50 UTCGHSA enrichment
  36. 2026-09-06 22:41 UTCGHSA enrichment
  37. 2026-09-06 17:22 UTCEG score recompute
  38. 2026-09-06 17:22 UTCGHSA enrichment
  39. 2026-09-06 13:48 UTCEPSS rescore
  40. 2026-09-06 12:42 UTCGHSA enrichment
  41. 2026-09-06 08:13 UTCGHSA enrichment
  42. 2026-09-06 03:51 UTCGHSA enrichment
  43. 2026-09-05 23:29 UTCGHSA enrichment
  44. 2026-09-05 19:06 UTCEG score recompute
  45. 2026-09-05 19:06 UTCGHSA enrichment
  46. 2026-09-05 15:31 UTCEPSS rescore
  47. 2026-09-05 09:37 UTCGHSA enrichment
  48. 2026-09-05 05:15 UTCGHSA enrichment
  49. 2026-09-04 16:17 UTCEG score recompute
  50. 2026-09-04 16:17 UTCGHSA enrichment
  51. 2026-09-04 11:56 UTCEG score recompute
  52. 2026-09-04 11:56 UTCGHSA enrichment
  53. 2026-09-04 05:07 UTCEPSS rescore
  54. 2026-09-02 14:12 UTCEPSS rescore
  55. 2026-09-01 22:47 UTCEG score recompute
  56. 2026-09-01 22:47 UTCGHSA enrichment
  57. 2026-09-01 13:54 UTCEPSS rescore
  58. 2026-09-01 04:40 UTCEPSS rescore
  59. 2026-08-31 23:59 UTCGHSA enrichment
  60. 2026-08-31 06:41 UTCGHSA enrichment
  61. 2026-08-31 01:50 UTCGHSA enrichment
  62. 2026-08-30 21:28 UTCEG score recompute
  63. 2026-08-30 21:28 UTCGHSA enrichment
  64. 2026-08-30 19:18 UTCEPSS rescore
  65. 2026-08-30 17:05 UTCGHSA enrichment
  66. 2026-08-30 12:43 UTCGHSA enrichment
  67. 2026-08-30 08:13 UTCGHSA enrichment
  68. 2026-08-30 03:42 UTCEG score recompute
  69. 2026-08-30 03:42 UTCGHSA enrichment
  70. 2026-08-30 01:22 UTCEPSS rescore
  71. 2026-08-29 23:20 UTCEG score recompute
  72. 2026-08-29 23:20 UTCGHSA enrichment
  73. 2026-08-28 21:42 UTCEPSS rescore
  74. 2026-08-28 01:23 UTCGHSA enrichment
  75. 2026-08-27 20:55 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 78.4% 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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