CVE-2026-27870

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 79% 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: epss, secondary
Trending — 3 sources updated this week
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.8Exploit: NoneExposed: 0

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

An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this case, registration action IS required) who has the vulnerable software could, introduce arbitrary JavaScript by injecting a Cross-site Scripting (XSS)  payload into the 'Hostname' field of the configuration file resulting in a XSS in the path /upgrade/query.php?cmd=p+3%3Bversion. This issue affects Regesta Smart HD-PLC - TLDPH16D2: 11.02.05.10.02.

CVSS v3
4.8
EG Score
4.8(medium)
EPSS
21.1%
KEV
Not listed

Published

June 17, 2026

Last Modified

July 1, 2026

Advisory Details (2)

Auto-updated Jun 19, 2026
No patch confirmed yet.
generic

CVE-2026-27870 affecting Regesta Smart HD-PLC from Teldat

https://www.hackrtu.com/blog/CNA-CVE-2026-27870/
generic

TELDAT - Client Support

https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support&none=true&language=en-US

Vendor Advisories for CVE-2026-27870(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 25× in last 7d / 72× 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 22:22 UTCEG score recompute
  2. 2026-07-06 22:21 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 20:04 UTCEG score recompute
  8. 2026-07-05 20:04 UTCGHSA enrichment
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 18:26 UTCEG score recompute
  11. 2026-07-04 18:26 UTCGHSA enrichment
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-03 16:38 UTCEG score recompute
  15. 2026-07-03 16:37 UTCGHSA enrichment
  16. 2026-07-02 15:01 UTCEG score recompute
  17. 2026-07-02 15:01 UTCGHSA enrichment
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-07-01 13:24 UTCEG score recompute
  21. 2026-07-01 13:24 UTCGHSA enrichment
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 23:22 UTCEPSS rescore
  24. 2026-06-30 11:47 UTCEG score recompute
  25. 2026-06-30 11:47 UTCGHSA enrichment
Show 47 more
  1. 2026-06-29 14:06 UTCEPSS rescore
  2. 2026-06-29 09:52 UTCEG score recompute
  3. 2026-06-29 09:52 UTCGHSA enrichment
  4. 2026-06-28 14:07 UTCEPSS rescore
  5. 2026-06-28 14:07 UTCEPSS rescore
  6. 2026-06-28 08:15 UTCEG score recompute
  7. 2026-06-28 08:15 UTCGHSA enrichment
  8. 2026-06-28 04:56 UTCEPSS rescore
  9. 2026-06-28 04:56 UTCEPSS rescore
  10. 2026-06-27 06:39 UTCEG score recompute
  11. 2026-06-27 06:39 UTCGHSA enrichment
  12. 2026-06-27 03:08 UTCEPSS rescore
  13. 2026-06-26 05:02 UTCEG score recompute
  14. 2026-06-26 05:02 UTCGHSA enrichment
  15. 2026-06-25 13:49 UTCEPSS rescore
  16. 2026-06-25 13:49 UTCEPSS rescore
  17. 2026-06-25 03:26 UTCEG score recompute
  18. 2026-06-25 03:26 UTCGHSA enrichment
  19. 2026-06-24 14:05 UTCEPSS rescore
  20. 2026-06-24 14:05 UTCEPSS rescore
  21. 2026-06-24 01:50 UTCEG score recompute
  22. 2026-06-24 01:50 UTCGHSA enrichment
  23. 2026-06-23 21:33 UTCEPSS rescore
  24. 2026-06-23 21:32 UTCEPSS rescore
  25. 2026-06-23 00:14 UTCEG score recompute
  26. 2026-06-23 00:14 UTCGHSA enrichment
  27. 2026-06-22 14:25 UTCEPSS rescore
  28. 2026-06-22 14:25 UTCEPSS rescore
  29. 2026-06-21 22:24 UTCEG score recompute
  30. 2026-06-21 22:24 UTCGHSA enrichment
  31. 2026-06-21 14:56 UTCEPSS rescore
  32. 2026-06-21 14:56 UTCEPSS rescore
  33. 2026-06-21 01:59 UTCEPSS rescore
  34. 2026-06-21 01:59 UTCEPSS rescore
  35. 2026-06-20 20:47 UTCEG score recompute
  36. 2026-06-20 20:47 UTCGHSA enrichment
  37. 2026-06-19 19:25 UTCEPSS rescore
  38. 2026-06-19 19:25 UTCEPSS rescore
  39. 2026-06-19 19:08 UTCEG score recompute
  40. 2026-06-19 19:08 UTCGHSA enrichment
  41. 2026-06-18 17:52 UTCEPSS rescore
  42. 2026-06-18 17:31 UTCEG score recompute
  43. 2026-06-18 17:31 UTCGHSA enrichment
  44. 2026-06-17 17:53 UTCEPSS rescore
  45. 2026-06-17 17:53 UTCEPSS rescore
  46. 2026-06-17 15:52 UTCEG score recompute
  47. 2026-06-17 15:51 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-27870?
CVE-2026-27870 is a medium vulnerability published on June 17, 2026. An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this case, registration action IS required) who has the vulnerable software could, introduce arbitrary JavaScript by injecting a Cross-site Scripting (XSS) payload into the 'Hostname' field of the…
When was CVE-2026-27870 disclosed?
CVE-2026-27870 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27870 actively exploited?
CVE-2026-27870 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-27870?
CVE-2026-27870 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-27870?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27870, 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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