CVE-2026-27869Network attack vector

Unauthenticated web-interface denial of service via slow headers

Published Jun 17, 2026 · Updated Jun 17, 2026

Denial of service in Teldat Regesta Smart HD-PLC - TLDPH16D2 11.02.05.10.02 allows remote attackers to interrupt its web interface. The HTTP service keeps slow-header connections engaged and allocates their resources without effective limits or throttling. Network reachability is sufficient; no account or user interaction is required, and the documented consequence is limited to the web interface.

CVSS severity6.9
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Teldat Regesta Smart HD-PLC - TLDPH16D2 11.02.05.10.02 allows remote attackers to interrupt its web interface. The HTTP service keeps slow-header connections engaged and allocates their resources without effective limits or throttling. Network reachability is sufficient; no account or user interaction is required, and the documented consequence is limited to the web interface.

The record

CVE
CVE-2026-27869
Published
Jun 17, 2026
Updated
Jun 17, 2026
Vendor
Teldat
Product
Regesta Smart HD-PLC - TLDPH16D2
Classifications
CWE-770, CAPEC-227, CAPEC-469, T1499.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.02.05.10.02

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Teldat · Regesta Smart HD-PLC - TLDPH16D2version=11.02.05.10.02

Published CVSS scores

6.9HackRTU CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
CAPEC-227Sustained Client Engagement
CAPEC-469HTTP DoS
T1499.002Service Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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