CVE-2025-5871VulnerabilityPublished 9 Jun 2025

CVE-2025-5871: Papendorf SOL Connect Center · Missing Authentication

Affects Papendorf SOL Connect CenterSource CVE Database V5

Not known to be exploited · CVSS 6.9 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score

6.9Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: None
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 9 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Papendorf SOL Connect Center	Affected =3.3.0.0	Fixed in–

AI-suggested

Given the absence of an official patch or vendor response, European organizations should immediately implement compensating controls to mitigate the risk. These include: 1) Network segmentation to isolate the SOL Connect Center web interface from public or less trusted networks, restricting access only to authorized internal systems and personnel. 2) Deploying web application firewalls (WAFs) or reverse proxies with strict access control policies to block unauthorized requests targeting the vulnerable interface. 3) Implementing strict IP whitelisting or VPN access for any remote connections to the SOL Connect Center to ensure only trusted users can reach the interface. 4) Continuous monitoring and logging of all access attempts to the SOL Connect Center, with alerts configured for any anomalous or unauthorized access patterns. 5) Conducting internal audits to identify any sensitive data or critical functions exposed via the vulnerable interface and applying additional controls or manual oversight. 6) Planning for an upgrade or migration to a patched or alternative solution once available, and engaging with Papendorf or third-party security vendors for updates. 7) Educating IT and security teams about this vulnerability and ensuring incident response plans include scenarios involving unauthorized access to the SOL Connect Center.

Description

A vulnerability was found in Papendorf SOL Connect Center 3.3.0.0 and classified as problematic. Affected by this issue is some unknown functionality of the component Web Interface. The manipulation leads to missing authentication. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

For European organizations using Papendorf SOL Connect Center 3.3.0.0, this vulnerability poses a significant risk of unauthorized access to internal systems or data managed through the affected web interface. The missing authentication could allow attackers to bypass security controls, potentially leading to data leakage, unauthorized configuration changes, or disruption of services. This is particularly concerning for sectors such as manufacturing, utilities, or logistics where SOL Connect Center might be deployed to manage operational technology or supply chain systems. The medium severity rating reflects that while direct confidentiality, integrity, or availability impacts are limited, the unauthorized access vector could be leveraged as a foothold for further attacks or lateral movement within networks. The lack of vendor response and patch availability increases the window of exposure, compelling organizations to implement compensating controls. European organizations must also consider compliance implications under GDPR if personal data is accessible through the vulnerable interface, as unauthorized access could constitute a data breach. The remote and unauthenticated nature of the exploit means attackers can launch attacks from anywhere, increasing the threat surface for European entities.

References

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