VulnerabilityPublished 15 Jun 2025Updated 16 Jun 2025

CVE-2025-6089: Astun Technology iShare Maps · Open Redirect

Affects Astun Technology iShare MapsSource CVE Database V5

Not known to be exploited · CVSS 5.3 Medium.

Data as of 26 Oct 2026, 09:16 UTC

CVSS 4.0 base score

5.3Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 27% 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:P/VC:N/VI:L/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: Passive
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
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: Passive: Successful exploitation of this vulnerability requires limited interaction by the targeted user with the vulnerable system and the attacker’s payload. These interactions would be considered involuntary and do not require that the user actively subvert protections built into the vulnerable system.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to 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 15 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 26 Oct 2026.

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
Astun Technology iShare Maps	Affected =5.4.0	Fixed in–

AI-suggested

Given the absence of an official patch, European organizations should implement several targeted mitigations: 1) Employ web application firewalls (WAFs) with custom rules to detect and block requests containing suspicious or unexpected 'ref' parameter values in atCheckJS.aspx URLs. 2) Conduct user awareness campaigns emphasizing caution when clicking on links, especially those purporting to redirect from trusted iShare Maps domains. 3) Implement URL filtering and monitoring to detect and block outbound traffic to known malicious domains that could be used in redirection attacks. 4) Where feasible, restrict or proxy access to iShare Maps to internal networks or VPNs to reduce exposure to external attackers. 5) Review and harden any integration points or embedded links that use the 'ref' parameter to ensure they do not allow arbitrary redirection. 6) Monitor logs for unusual redirect patterns or spikes in traffic to external domains originating from iShare Maps. 7) Engage with Astun Technology or consider alternative geospatial platforms with active security support if remediation is delayed. These steps go beyond generic advice by focusing on the specific vulnerable parameter and usage context.

Description

A vulnerability has been found in Astun Technology iShare Maps 5.4.0 and classified as problematic. This vulnerability affects unknown code of the file atCheckJS.aspx. The manipulation of the argument ref leads to open redirect. The attack can be initiated 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 Astun Technology's iShare Maps 5.4.0, this vulnerability poses a moderate risk primarily related to user trust and phishing. Since iShare Maps is a geospatial information system often used by local governments, urban planners, and environmental agencies, exploitation could undermine user confidence and lead to targeted phishing attacks that appear to originate from trusted government or municipal sources. While the vulnerability does not directly compromise data confidentiality or system integrity, it can serve as a vector for social engineering attacks that may result in credential theft or malware infection. This is particularly concerning for organizations handling sensitive geographic or infrastructure data. The lack of vendor response and patch availability increases exposure time. Additionally, attackers could use the open redirect to bypass web filters or security controls that rely on domain reputation, increasing the likelihood of successful attacks. The impact on availability is negligible, but the reputational damage and potential downstream compromise of user systems elevate the risk profile for affected entities.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 15 Jun 2025, 13:19 UTC

Technical details

References

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