CVE-2025-5378VulnerabilityPublished 31 May 2025Updated 2 Jun 2025

CVE-2025-5378: Astun Technology iShare Maps · Cross Site Scripting

Affects Astun Technology iShare MapsSource CVE Database V5

Not known to be exploited · CVSS 5.3 Medium.

Data as of 25 Oct 2026, 19:02 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 29% 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

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

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.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 31 May 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
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 malicious payloads targeting the 'atTxtStreet' parameter. 2) Conduct input validation and output encoding at the application level if source code access is available, sanitizing all user-supplied inputs to prevent script injection. 3) Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 4) Educate users about the risks of interacting with suspicious links or inputs within the iShare Maps interface. 5) Monitor web server logs for unusual or suspicious requests targeting the vulnerable parameter to identify potential exploitation attempts. 6) Consider isolating or restricting access to the affected application until a vendor patch is released. 7) Engage with Astun Technology or community forums to seek updates or unofficial patches. These measures, combined, can reduce the risk of successful exploitation while awaiting an official fix.

Description

A vulnerability classified as problematic has been found in Astun Technology iShare Maps 5.4.0. This affects an unknown part of the file mycouncil2.aspx. The manipulation of the argument atTxtStreet leads to cross site scripting. It is possible to initiate the attack 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 XSS vulnerability poses a risk primarily to web application users, including employees, partners, or citizens accessing public services via the affected platform. Exploitation could lead to theft of session cookies, enabling attackers to impersonate legitimate users, potentially accessing sensitive geographic or council-related data. It could also facilitate phishing attacks by injecting malicious content into trusted web pages, undermining user confidence and potentially causing reputational damage. While the vulnerability does not directly compromise backend systems or data integrity at a high level, the indirect effects on confidentiality and trust can be significant, especially for public sector organizations or municipalities relying on iShare Maps for service delivery. Additionally, the lack of vendor response and patch availability increases the window of exposure, necessitating immediate mitigation efforts by affected organizations.

Summary

CVE-2025-5378 is a cross-site scripting (XSS) vulnerability identified in Astun Technology's iShare Maps version 5.4.0. The vulnerability arises from improper sanitization of the 'atTxtStreet' parameter within the 'mycouncil2.aspx' file. An attacker can remotely inject malicious scripts through this parameter, which are then executed in the context of the victim's browser. This type of vulnerability enables attackers to perform actions such as session hijacking, defacement, or redirecting users to malicious sites. The vulnerability is classified as 'problematic' with a CVSS 4.0 base score of 5.3, indicating a medium severity level. The attack vector is network-based (AV:N), requiring no privileges (PR:N) and no authentication (AT:N), but user interaction is necessary (UI:P) for exploitation. The impact on confidentiality is none, integrity is low, and availability is none, suggesting the primary risk is to user trust and session security rather than system compromise. The vendor has not responded to the disclosure, and no patches or mitigations have been officially released. Although no known exploits are currently in the wild, the public disclosure of the vulnerability increases the risk of exploitation by threat actors.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 8 Jul 2025, 13:29 UTC

Technical details

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