How severe is CVE-2025-10183?

CVE-2025-10183 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2025-10183 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-10183?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-10183 have an EU (EUVD) identifier?

Yes. CVE-2025-10183 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27278.

When was CVE-2025-10183 published?

CVE-2025-10183 was published on 2025-09-09 and last updated on 2026-06-17.

CVE-2025-10183

CVE-2025-10183 is a critical-severity vulnerability with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-611.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-27278
Weakness: CWE-611
Published: 2025-09-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-10183?: 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.
How severe is CVE-2025-10183?: CVE-2025-10183 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2025-10183 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-10183?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-10183 have an EU (EUVD) identifier?: Yes. CVE-2025-10183 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27278.
When was CVE-2025-10183 published?: CVE-2025-10183 was published on 2025-09-09 and last updated on 2026-06-17.

References

https://blog.blacklanternsecurity.com/p/teccom-tecconnect-41-xml-external

Other CWE-611 (Improper Restriction of XML External Entity Reference (XXE)) vulnerabilities

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CVE-2019-14678 — Critical (CVSS 10.0): SAS XML Mapper 9.45 has an XML External Entity (XXE) vulnerability that can be leveraged by malicious attackers in…
CVE-2015-9280 — Critical (CVSS 10.0): MailEnable before 8.60 allows XXE via an XML document in the request.aspx Options parameter.
CVE-2018-1000838 — Critical (CVSS 10.0): autopsy version <= 4.9.0 contains a XML External Entity (XXE) vulnerability in CaseMetadata XML Parser that can result…
CVE-2018-1000837 — Critical (CVSS 10.0): UML Designer version <= 8.0.0 contains a XML External Entity (XXE) vulnerability in XML parser for plugins that can…
CVE-2018-1000835 — Critical (CVSS 10.0): KeePassDX version <= 2.5.0.0beta17 contains a XML External Entity (XXE) vulnerability in kdbx file parser that can…

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