CVE-2025-27260
Ericsson Indoor Connect 8855 Firmware ≤ 2025.q3
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XSummary
CVE-2025-27260 is a high-severity Improper Filtering of Special Elements (CWE-790) vulnerability in Ericsson Indoor Connect 8855 Firmware. Its CVSS base score is 7.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique PowerShell (T1059.001); ranked at the 12th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and SI-15 (Information Output Filtering) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-27260 is an Improper Filtering of Special Elements vulnerability (CWE-790) in Ericsson Indoor Connect 8855 versions prior to 2025.Q3. Published on 2026-03-25, it enables unauthorized modification of certain information if exploited. The vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N), reflecting high severity driven by network accessibility, low attack complexity, no required privileges or user interaction, and high integrity impact without affecting confidentiality or availability.
A remote, unauthenticated attacker can exploit this vulnerability over the network with low complexity and no user interaction. Successful exploitation allows the attacker to modify certain information without authorization, potentially compromising the integrity of the affected Indoor Connect 8855 system.
Ericsson has issued advisories on the vulnerability, including details at https://www.ericsson.com/en/about-us/security/psirt/CVE-2025-27260 and a security bulletin for Indoor Connect at https://www.ericsson.com/en/about-us/security/psirt/security-bulletin-indoorconnect-march-2026. Security practitioners should consult these resources for recommended mitigations and patching instructions.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-208979
Vulnerability Data
Ericsson Indoor Connect 8855 versions prior to 2025.Q3 contains an Improper Filtering of Special Elements vulnerability which, if exploited, can lead to unauthorized modification of certain information
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Input validation directly requires checking and filtering special elements in data received from upstream before further processing or forwarding.
Output filtering validates data sent downstream and can catch or correct unfiltered special elements prior to transmission.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect improper filtering but does not itself implement the filtering control.
Secure development life cycle mandates input validation and sanitization that directly prevents improper filtering of special elements.
Application security requirements explicitly call for input validation controls that mitigate improper special-element filtering.
Secure system architecture and engineering principles include defensive input handling that reduces the risk of unfiltered special elements.
Secure coding standards require proper filtering and encoding of special elements before downstream processing.