Security readout for executives and security teams
Plain-English summary
CVE-2022-23768 affects Neo Information Systems Home AP NIS-HAP11AC. The issue is an exposed Telnet service that may let an unauthenticated attacker take control of the device or manipulate it. Treat affected devices as high risk if Telnet is reachable from untrusted networks.
Executive priority
Prioritize this where the affected access point is deployed in business, branch, or remote-office networks. Device takeover risk can undermine network trust and availability, but urgency depends on whether Telnet is reachable from untrusted networks.
Technical view
The CVE describes improper access control, CWE-284, in NIS-HAP11AC version V3.0-B20201117095902. The CVSS 3.1 score is 8.8, with no privileges or user interaction required and high confidentiality, integrity, and availability impact. The CVSS vector lists adjacent-network access, while the description references remote attackers.
Likely exposure
Exposure is likely limited to Home AP NIS-HAP11AC devices running V3.0-B20201117095902 with Telnet exposed beyond trusted administration networks. The bundle provides no CPEs and names only one affected version.
Exploitation context
The provided data does not show CISA KEV listing or confirmed active exploitation. Public descriptions state attackers may remotely control or manipulate the device through the exposed Telnet service, but no exploit availability or campaign evidence is provided.
Researcher notes
Evidence is sparse and centered on the CVE record and KRCERT reference. Key uncertainties are vendor remediation status, whether other firmware builds are affected, and whether the exposed Telnet service is reachable beyond adjacent networks in real deployments.
Mitigation direction
- Identify any Home AP NIS-HAP11AC devices and firmware versions in use.
- Check Neo Information Systems or KRCERT guidance for supported firmware or configuration fixes.
- Remove Telnet exposure from untrusted networks while confirming vendor guidance.
- Restrict device administration to trusted management networks only.
- Replace unsupported affected devices if no vendor-supported remediation is available.
Validation and detection
- Inventory devices for model Home AP NIS-HAP11AC and version V3.0-B20201117095902.
- Verify whether Telnet is reachable from guest, user, external, or unmanaged networks.
- Review router administration settings against vendor or KRCERT remediation guidance.
- Confirm monitoring covers unexpected administrative access or configuration changes on affected devices.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-23768 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66928CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.