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VulnerabilityPublished

CVE-2025-10183: TecCom TecConnect · XML External Entity (XXE)

Affects TecCom TecConnectSource CVE Database V5

0

Not known to be exploited · CVSS 9.1 Critical · end of life, no fix coming : replace or isolate TecCom TecConnect; no fix will be released.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
None coming – the product is end of life
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

No fix will be released: TecCom TecConnect is end of life. Replace it, or isolate it from untrusted networks until you can.

Affected software

ProductAffectedFixed in
TecCom TecConnectAffected
  • =4.1
Fixed in–

AI-suggested

  1. Immediate upgrade to TecCom Connect 5 is the most effective mitigation, as it is the supported version likely containing fixes for this vulnerability.
  2. If upgrading is not immediately feasible, implement network-level controls to restrict access to the OpenMessaging webservice, such as IP whitelisting, VPN access, or firewall rules limiting inbound traffic to trusted sources only.
  3. Employ Web Application Firewalls (WAFs) with custom rules to detect and block XML payloads containing external entity references or suspicious XML structures.
  4. Monitor network traffic for unusual outbound connections to unknown or attacker-controlled servers, which may indicate exfiltration attempts.
  5. Conduct thorough audits of existing logs and systems for signs of exploitation attempts or data leakage.
  6. Educate internal teams about the risks of using unsupported software versions and enforce strict patch and upgrade policies.
  7. Consider isolating the vulnerable service in a segmented network zone to minimize potential damage.

Description

A blind XML External Entity (XXE) injection in the OpenMessaging webservice in TecCom TecConnect 4.1 allows an unauthenticated attacker to exfiltrate arbitrary files to an attacker-controlled server. TecConnect 4.1 is considered end-of-life as of December 2023. Users are advised to upgrade to TecCom Connect 5.

References

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