CVE-2026-55398

LOWNVD 3.73.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 3.7 from GitHub Security Advisory published 2026-07-15. NVD baseline CVSS 3.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
3.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 3.7Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (Absolute Software) lists Absolute Security Secure Access versions before 14.55 as affected. No release containing a fix is confirmed on record.

CVE-2026-55398 is a memory management vulnerability in Secure Access clients and servers prior to 14.55. Attackers with intimate knowledge of and total control over the tunnel protocol can create a non-persistent DoS against the server.

CVSS v3
3.7
EG Score
3.7LOWmedium confidence
EG Risk
32
EG Risk 32/100

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 (value × EchelonGraph’s weight)
Severity37% × 45%
The EG Score, 3.7 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend 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 at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 15, 2026

Last Modified

July 16, 2026

Advisory Details (1)

Auto-updated Jul 15, 2026
No fix on record yet.
Web page

CVE-2026-55398 | Absolute Security

https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-55398

Vendor Advisories for CVE-2026-55398(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 11× in last 7d / 38× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 124 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 24 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  3. 2026-10-12 15:55 UTCEG score recompute
  4. 2026-10-11 19:39 UTCEG score recompute
  5. 2026-10-11 16:54 UTCEG score recompute
  6. 2026-10-11 14:17 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  16. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  18. 2026-10-01 12:36 UTCEG score recompute
  19. 2026-10-01 12:36 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  21. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  22. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  23. 2026-09-28 08:41 UTCEG score recompute
  24. 2026-09-28 08:41 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  25. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 26th percentile
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  2. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  3. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  4. 2026-09-23 03:14 UTCEG score recompute
  5. 2026-09-23 03:14 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  6. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  7. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  8. 2026-09-18 04:43 UTCEG score recompute
  9. 2026-09-18 04:43 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  10. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  11. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  12. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  13. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  14. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  15. 2026-09-11 21:44 UTCEG score recompute
  16. 2026-09-11 21:44 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  17. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  18. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  19. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  20. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  21. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  22. 2026-09-05 20:47 UTCEG score recompute
  23. 2026-09-05 20:47 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  24. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  25. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  26. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  27. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  28. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  29. 2026-08-30 03:45 UTCEG score recompute
  30. 2026-08-30 03:45 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  31. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  32. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  33. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  34. 2026-08-26 14:58 UTCEG score recompute
  35. 2026-08-26 14:58 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  36. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  37. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  38. 2026-08-23 12:00 UTCEG score recompute
  39. 2026-08-23 12:00 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  40. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  41. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  42. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  43. 2026-08-20 09:18 UTCEG score recompute
  44. 2026-08-20 09:18 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  45. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  46. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  47. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  48. 2026-08-17 06:35 UTCEG score recompute
  49. 2026-08-17 06:35 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  50. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  51. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  52. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  53. 2026-08-14 03:46 UTCEG score recompute
  54. 2026-08-14 03:46 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  55. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  56. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  57. 2026-08-11 01:04 UTCEG score recompute
  58. 2026-08-11 01:04 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  59. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  60. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  61. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  62. 2026-08-07 22:22 UTCEG score recompute
  63. 2026-08-07 22:22 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  64. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  65. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  66. 2026-08-04 19:40 UTCEG score recompute
  67. 2026-08-04 19:39 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  68. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  69. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  70. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  71. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  72. 2026-08-01 16:55 UTCEG score recompute
  73. 2026-08-01 16:55 UTCGHSA enrichmentGHSA-h9wj-x3qv-rhcc · GitHub CVSS 3.7
  74. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  75. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.2% · 11th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55398?
CVE-2026-55398 is a low-severity vulnerability; its CVE record was published on July 15, 2026. CVE-2026-55398 is a memory management vulnerability in Secure Access clients and servers prior to 14.55. Attackers with intimate knowledge of and total control over the tunnel protocol can create a non-persistent DoS against the server.
When was the CVE record for CVE-2026-55398 published?
The CVE record for CVE-2026-55398 was published on July 15, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 16, 2026; the record at its source may have been updated since.
Is CVE-2026-55398 actively exploited?
CVE-2026-55398 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55398?
CVE-2026-55398 has a CVSS v3 base score of 3.7 (NVD).
How do I remediate CVE-2026-55398?
No fix for CVE-2026-55398 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 CVE record's CNA (Absolute Software) lists Absolute Security Secure Access versions before 14.55 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-55398 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-55398

Explore →

Is Your Infrastructure Affected by CVE-2026-55398?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs