CVE-2025-57853 | Red Hat Web Terminal default permission

VDB-356239 · CVE-2025-57853 · GCVE-0-2025-57853 RED HAT WEB TERMINAL DEFAULT PERMISSION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.4 $5k-$25k 1.25+ Summaryinfo A vulnerability identified as critical has been detected in Red Hat Web Terminal. This issue affects some unknown processing. This manipulation causes default permission. The identification of this vulnerability is CVE-2025-57853. The attack can only be executed locally. There is no exploit available. Detailsinfo A vulnerability classified as critical was found in Red Hat Web Terminal (affected version not known). Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a default permission vulnerability. The CWE definition for the vulnerability is CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: A container privilege escalation flaw was found in certain Web Terminal images. This issue stems from the /etc/passwd file being created with group-writable permissions during build time. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This could allow the attacker to add a new user with any arbitrary UID, including UID 0, leading to full root privileges within the container. It is possible to read the advisory at access.redhat.com. This vulnerability is known as CVE-2025-57853 since 08/21/2025. The exploitation appears to be difficult. Attacking locally is a requirement. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/08/2026). The attack technique deployed by this issue is T1222 according to MITRE ATT&CK. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor Red Hat Name Web Terminal License open-source Website Vendor: https://www.redhat.com/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.4 VulDB Meta Temp Score: 6.4 VulDB Base Score: 6.4 VulDB Temp Score: 6.4 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.4 CNA Vector (redhat): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Default permission CWE: CWE-276 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 08/21/2025 CVE reserved 04/08/2026 +230 days Advisory disclosed 04/08/2026 +0 days VulDB entry created 04/08/2026 +0 days VulDB entry last update Sourcesinfo Vendor: redhat.com Advisory: access.redhat.com Status: Confirmed CVE: CVE-2025-57853 (🔒) GCVE (CVE): GCVE-0-2025-57853 GCVE (VulDB): GCVE-100-356239 Entryinfo Created: 04/08/2026 16:30 Changes: 04/08/2026 16:30 (60) Complete: 🔍 Cache ID: 99:AD2:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸