Security readout for executives and security teams
Plain-English summary
Hikvision reports a high-severity buffer overflow in the device Search and Discovery feature of multiple NVR, DVR, CVR, and IPC models. An attacker already on the same local network could send crafted packets to an unpatched device and cause malfunction. This is most urgent for sites where surveillance devices share networks with users or vendors.
Executive priority
Prioritize remediation where Hikvision recorders or cameras are on shared office, vendor, or guest-accessible networks. Treat as high priority for physical security operations because successful exploitation can disrupt surveillance devices and the CVSS rating indicates broad impact potential.
Technical view
CVE-2025-66177 is a CWE-121 stack-based buffer overflow affecting listed Hikvision model families with build dates before 250807. The CVSS 3.1 score is 8.8 with adjacent-network attack vector, low complexity, no privileges, and no user interaction. The vendor description ties exploitation to specially crafted LAN packets targeting Search and Discovery.
Likely exposure
Exposure is limited to attackers with access to the same LAN or broadcast-adjacent network segment as affected Hikvision devices. Internet exposure is not stated in the provided sources.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. No public exploit status is provided. Risk is still meaningful because exploitation requires no credentials or user interaction once the attacker is on the local network.
Researcher notes
Sources do not provide packet format, proof-of-concept details, or confirmed code execution. The vendor text emphasizes device malfunction, while the CVSS vector rates confidentiality, integrity, and availability as high. Validate exposure through asset/build inventory and network adjacency rather than assuming internet reachability.
Mitigation direction
- Identify Hikvision devices matching the affected model families.
- Check firmware or build date against the vendor threshold: before 250807.
- Apply Hikvision-provided updates or guidance for affected devices.
- Restrict device discovery traffic to trusted management networks.
- Segment surveillance devices from user and guest LANs.
Validation and detection
- Inventory Hikvision NVR, DVR, CVR, and IPC assets.
- Record exact model family and firmware build date.
- Confirm whether the build date is before 250807.
- Review network placement for same-LAN attacker paths.
- Monitor vendor advisory for updated affected-product or remediation details.
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-121: Exact CWE lookup
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Open ATT&CK lookupCVE-2025-66177 mapping review
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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.
SSVC decision data
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:H2.85.9hikvisionVulnerability 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.