CVE-2026-1840

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

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

The Aclara Metrum Cellular Web Interface is vulnerable to unauthorized access due to the absence of authentication controls on critical system functions. This weakness exposes essential configuration settings, allowing attackers to alter operational parameters and trigger system restarts without restriction. Such unauthorized changes can disrupt normal functionality and, if performed repeatedly, may lead to a loss of communications to the device.

CVSS v3
7.5
EG Score
7.5(high)
EPSS
49.6%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 25, 2026

Advisory Details (3)

Auto-updated Jun 25, 2026
Patch available. Sources: cisa.
cisa Patch Available

Hubbell Aclara Metrum Cellular Web Interface | CISA

https://www.cisa.gov/news-events/ics-advisories/icsa-26-174-07
generic

CSAF/csaf_files/OT/white/2026/icsa-26-174-07.json at develop · cisagov/CSAF · GitHub

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-174-07.json
generic
https://aclara.my.site.com/AclaraConnect/s/

Vendor Advisories for CVE-2026-1840(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 32× in last 7d / 61× 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. 2026-07-06 18:20 UTCEG score recompute
  2. 2026-07-06 18:19 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 05:14 UTCEG score recompute
  5. 2026-07-06 05:14 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 16:20 UTCEG score recompute
  8. 2026-07-05 16:20 UTCGHSA enrichment
  9. 2026-07-05 03:28 UTCEG score recompute
  10. 2026-07-05 03:28 UTCGHSA enrichment
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 14:35 UTCEG score recompute
  14. 2026-07-04 14:35 UTCGHSA enrichment
  15. 2026-07-04 06:31 UTCEPSS rescore
  16. 2026-07-04 01:43 UTCEG score recompute
  17. 2026-07-04 01:43 UTCGHSA enrichment
  18. 2026-07-03 12:49 UTCEG score recompute
  19. 2026-07-03 12:49 UTCGHSA enrichment
  20. 2026-07-02 23:18 UTCEG score recompute
  21. 2026-07-02 23:18 UTCGHSA enrichment
  22. 2026-07-02 10:25 UTCEG score recompute
  23. 2026-07-02 10:25 UTCGHSA enrichment
  24. 2026-07-01 21:32 UTCEG score recompute
  25. 2026-07-01 21:32 UTCGHSA enrichment
Show 36 more
  1. 2026-07-01 15:06 UTCEPSS rescore
  2. 2026-07-01 15:06 UTCEPSS rescore
  3. 2026-07-01 08:38 UTCEG score recompute
  4. 2026-07-01 08:38 UTCGHSA enrichment
  5. 2026-06-30 23:22 UTCEPSS rescore
  6. 2026-06-30 19:45 UTCEG score recompute
  7. 2026-06-30 19:45 UTCGHSA enrichment
  8. 2026-06-30 06:53 UTCEG score recompute
  9. 2026-06-30 06:53 UTCGHSA enrichment
  10. 2026-06-29 17:59 UTCEG score recompute
  11. 2026-06-29 17:58 UTCGHSA enrichment
  12. 2026-06-29 14:06 UTCEPSS rescore
  13. 2026-06-29 05:05 UTCEG score recompute
  14. 2026-06-29 05:05 UTCGHSA enrichment
  15. 2026-06-28 16:13 UTCEG score recompute
  16. 2026-06-28 16:13 UTCGHSA enrichment
  17. 2026-06-28 14:07 UTCEPSS rescore
  18. 2026-06-28 04:56 UTCEPSS rescore
  19. 2026-06-28 04:56 UTCEPSS rescore
  20. 2026-06-28 03:20 UTCEG score recompute
  21. 2026-06-28 03:20 UTCGHSA enrichment
  22. 2026-06-27 14:27 UTCEG score recompute
  23. 2026-06-27 14:27 UTCGHSA enrichment
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-27 01:34 UTCEG score recompute
  26. 2026-06-27 01:33 UTCGHSA enrichment
  27. 2026-06-26 12:41 UTCEG score recompute
  28. 2026-06-26 12:41 UTCGHSA enrichment
  29. 2026-06-25 23:48 UTCEG score recompute
  30. 2026-06-25 23:48 UTCGHSA enrichment
  31. 2026-06-25 15:47 UTCNVD updateCVSS v4 → 8.7
  32. 2026-06-25 13:49 UTCEPSS rescore
  33. 2026-06-25 10:56 UTCEG score recompute
  34. 2026-06-25 10:55 UTCGHSA enrichment
  35. 2026-06-24 22:02 UTCEG score recompute
  36. 2026-06-24 22:02 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-1840?
CVE-2026-1840 is a high vulnerability published on June 24, 2026. The Aclara Metrum Cellular Web Interface is vulnerable to unauthorized access due to the absence of authentication controls on critical system functions. This weakness exposes essential configuration settings, allowing attackers to alter operational parameters and trigger system restarts without…
When was CVE-2026-1840 disclosed?
CVE-2026-1840 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-1840 actively exploited?
CVE-2026-1840 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 49.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-1840?
CVE-2026-1840 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-1840?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-1840, 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-2026-1840

Explore →

Is Your Infrastructure Affected by CVE-2026-1840?

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

Start Free Scan →Browse All CVEs