CVE-2026-13773

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 6.1%, top 7% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 6%CVSS: 10.0Exploit: None knownExposed: 0

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

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.string_to_object() on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound IIOP SSRF to an attacker-chosen host; when chained with the IBM ORB's getUserException class-instantiation flaw (WAS-26), this SSRF escalates to remote code execution on the calling JVM.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: 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
Severity100% × 45%
Exploitation6% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
6%
EPSS %ILE
93%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 2, 2026

Advisory Details (1)

Auto-updated Sep 5, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol

https://www.ibm.com/support/pages/node/7278594

Vendor Advisories for CVE-2026-13773(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 8× in last 7d / 108× 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 289 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-13773?
CVE-2026-13773 is a critical vulnerability published on June 30, 2026. IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.stringtoobject() on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound…
When was CVE-2026-13773 disclosed?
CVE-2026-13773 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13773 actively exploited?
CVE-2026-13773 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 7.0% of all scored CVEs.
What is the CVSS score of CVE-2026-13773?
CVE-2026-13773 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-13773?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13773, 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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