CVE-2022-26833

CRITICALNVD 9.49.8▲
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-26. NVD baseline CVSS 9.4; sources differ by 0.4.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.4
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 37%CVSS: 9.4Exploit: NoneExposed: 0

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

An improper authentication vulnerability exists in the REST API functionality of Open Automation Software OAS Platform V16.00.0121. A specially-crafted series of HTTP requests can lead to unauthenticated use of the REST API. An attacker can send a series of HTTP requests to trigger this vulnerability.

CVSS v3
9.4
EG Score
9.8(medium)
EG Risk
65(Track*)
EG Risk 65/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
98.4%
KEV
Not listed

Published

May 25, 2022

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jul 15, 2026
No patch confirmed yet.
generic

TALOS-2022-1513 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence

https://talosintelligence.com/vulnerability_reports/TALOS-2022-1513

Weakness Classification(1)

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 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.

  1. 2026-07-24 14:15 UTCEPSS rescore
  2. 2026-07-23 14:16 UTCEPSS rescore
  3. 2026-07-23 02:09 UTCEG score recompute
  4. 2026-07-22 22:56 UTCEG score recompute
  5. 2026-07-22 14:06 UTCEPSS rescore
  6. 2026-07-22 14:06 UTCEPSS rescore
  7. 2026-07-21 15:22 UTCEPSS rescore
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  9. 2026-07-20 17:05 UTCEPSS rescore
  10. 2026-07-19 14:29 UTCEPSS rescore
  11. 2026-07-19 02:27 UTCEPSS rescore
  12. 2026-07-18 10:02 UTCEPSS rescore
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  14. 2026-07-16 17:00 UTCEPSS rescore
  15. 2026-07-16 17:00 UTCEPSS rescore
  16. 2026-07-15 16:56 UTCEPSS rescore
  17. 2026-07-15 16:56 UTCEPSS rescore
  18. 2026-07-15 01:58 UTCEPSS rescore
  19. 2026-07-15 01:58 UTCEPSS rescore
  20. 2026-07-13 06:11 UTCEPSS rescore
  21. 2026-07-13 06:11 UTCEPSS rescore
  22. 2026-07-12 05:44 UTCEPSS rescore
  23. 2026-07-11 08:25 UTCEPSS rescore
  24. 2026-07-09 19:07 UTCEPSS rescore
  25. 2026-07-08 15:12 UTCEPSS rescore
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  1. 2026-07-06 16:25 UTCEPSS rescore
  2. 2026-07-06 16:25 UTCEPSS rescore
  3. 2026-07-05 02:28 UTCEPSS rescore
  4. 2026-07-01 15:04 UTCEPSS rescore
  5. 2026-06-30 23:20 UTCEPSS rescore
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  7. 2026-06-29 14:04 UTCEPSS rescore
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  9. 2026-06-28 14:06 UTCEPSS rescore
  10. 2026-06-28 04:54 UTCEPSS rescore
  11. 2026-06-28 04:54 UTCEPSS rescore
  12. 2026-06-27 03:07 UTCEPSS rescore
  13. 2026-06-25 13:48 UTCEPSS rescore
  14. 2026-06-24 14:03 UTCEPSS rescore
  15. 2026-06-24 14:03 UTCEPSS rescore
  16. 2026-06-23 21:31 UTCEPSS rescore
  17. 2026-06-23 21:31 UTCEPSS rescore
  18. 2026-06-22 14:24 UTCEPSS rescore
  19. 2026-06-21 01:58 UTCEPSS rescore
  20. 2026-06-21 01:58 UTCEPSS rescore
  21. 2026-06-18 17:51 UTCEPSS rescore
  22. 2026-06-18 17:51 UTCEPSS rescore
  23. 2026-06-17 17:51 UTCEPSS rescore
  24. 2026-06-17 17:51 UTCEPSS rescore
  25. 2026-06-16 17:51 UTCEPSS rescore
  26. 2026-06-15 17:46 UTCEPSS rescore
  27. 2026-06-12 23:10 UTCEPSS rescore
  28. 2026-06-12 23:10 UTCEPSS rescore
  29. 2026-06-10 22:16 UTCEPSS rescore
  30. 2026-06-10 13:20 UTCEPSS rescore
  31. 2026-06-08 14:15 UTCEPSS rescore
  32. 2026-06-08 14:15 UTCEPSS rescore
  33. 2026-06-06 13:46 UTCEPSS rescore
  34. 2026-06-06 13:46 UTCEPSS rescore
  35. 2026-05-31 22:29 UTCEPSS rescore
  36. 2026-05-31 22:29 UTCEPSS rescore
  37. 2026-05-28 13:43 UTCEPSS rescore
  38. 2026-05-28 13:43 UTCEPSS rescore
  39. 2026-05-28 13:43 UTCEPSS rescore
  40. 2026-05-27 13:39 UTCEPSS rescore
  41. 2026-05-27 13:39 UTCEPSS rescore
  42. 2026-05-25 21:35 UTCEG score recompute
  43. 2026-05-25 21:35 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2022/CVE-2022-26833.yaml
    First seen Jan 1, 2022

    Open Automation Software OAS Platform V16.00.0121 - Missing Authentication

    Open source ↗

Frequently asked(5)

What is CVE-2022-26833?
CVE-2022-26833 is a critical vulnerability published on May 25, 2022. An improper authentication vulnerability exists in the REST API functionality of Open Automation Software OAS Platform V16.00.0121. A specially-crafted series of HTTP requests can lead to unauthenticated use of the REST API. An attacker can send a series of HTTP requests to trigger this…
When was CVE-2022-26833 disclosed?
CVE-2022-26833 was first published in the National Vulnerability Database on May 25, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-26833 actively exploited?
CVE-2022-26833 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-26833?
CVE-2022-26833 has a CVSS v3 base score of 9.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.
How do I remediate CVE-2022-26833?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-26833, 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

Explore the affected products and dependency analysis for CVE-2022-26833

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