Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NSummary
CVE-2024-51977 is a medium-severity Insertion of Sensitive Information into Externally-Accessible File or Directory (CWE-538) vulnerability in Brother (inferred from references). Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Credentials In Files (T1552.001); ranked in the top 0.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-16 (Security and Privacy Attributes) — 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.
An information disclosure vulnerability tracked as CVE-2024-51977 affects certain Brother devices and allows unauthenticated network access to the URI path /etc/mnt_info.csv. The flaw can be triggered via a simple GET request against the HTTP service on TCP port 80, the HTTPS service on TCP port 443, or the IPP service on TCP port 631. The response returns a CSV table that includes the device model, firmware version, IP address, and serial number. The issue carries a CVSS 5.3 score and is categorized under CWE-538.
An attacker who can reach any of the three listed services can exploit the vulnerability without credentials or user interaction, obtaining device-identifying information that supports reconnaissance or targeted follow-on attacks.
Public references include Brother support pages that address the affected products and remediation steps, a vulnerability disclosure whitepaper, and detection templates such as the Nuclei template for CVE-2024-51977.
The EPSS score stands at 0.4868 with no indicated change from its peak value.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-54705
Vulnerability Data
An unauthenticated attacker who can access either the HTTP service (TCP port 80), the HTTPS service (TCP port 443), or the IPP service (TCP port 631), can leak several pieces of sensitive information from a vulnerable device. The URI path…
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/etc/mnt_info.csv can be accessed via a GET request and no authentication is required. The returned result is a comma separated value (CSV) table of information. The leaked information includes the device’s model, firmware version, IP address, and serial number.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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- 2 hardening rules · 2 OS baselines
V14.1.2V14.2.8
Mitigating Controls (NIST 800-53 r5) AI
Enforces per-object authorizations so that even if a file or directory is reachable, the sensitive contents remain inaccessible to unauthorized actors.
Associates sensitivity labels with data objects so that subsequent storage or flow decisions can enforce that only appropriately protected files or directories receive the data.
Controls information flows between objects, directly stopping sensitive data from being written into locations whose ACLs or visibility would expose it.
Requires confidentiality protection of information at rest, which can be implemented by restricting storage locations or encrypting contents that would otherwise be placed in externally visible files.
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.
Least-privilege file and directory permissions directly prevent unauthorized actors from reading sensitive data placed in accessible locations.
Protecting data-at-rest encompasses file-level access controls and encryption that stop exposure of sensitive information in externally reachable paths.
Hardened configuration baselines and ongoing config management reduce the chance that sensitive data is written to world-readable files or directories.
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.
By ensuring that only the minimum necessary data is present in files or directories that may be reachable by external parties, the control lowers the impact of any subsequent exposure.
Requiring visible or metadata labels on classified information helps ensure that files placed in externally accessible locations still carry an explicit sensitivity marker, lowering the likelihood of unnoticed exposure.
The control’s requirement to remove or securely destroy information stored in externally accessible locations reduces the risk of sensitive data being left in files or directories that external parties can reach.
Logging disposals, selecting vetted external disposal services, and protecting media according to classification reduce the likelihood that sensitive information ends up in externally accessible files or directories.
Verifying and sanitizing equipment prior to disposal or resale prevents sensitive files or directories from remaining accessible to external parties who later obtain the hardware.
Hardening callouts derived
Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).
Oracle Linux 8 (1 rule)
- V-248579 OL 8 must restrict access to the kernel message buffer. prevents CWE-538
RHEL 8 (1 rule)
- V-230269 RHEL 8 must restrict access to the kernel message buffer. prevents CWE-538