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Hikvision Wireless AP CVE-2026-16843

| EUVDEUVD-2026-51516 HIGH
OS Command Injection (CWE-78)
2026-07-31 hikvision GHSA-9f46-w698-g5q9
7.2
CVSS 3.1 · Vendor: hikvision
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain valid AP admin credentials
  2. Delivery
    Reach device management service over network
  3. Exploit
    Send crafted packet with embedded commands
  4. Execution
    Injected command bypasses input validation
  5. Persist
    Execute arbitrary commands on AP
  6. Impact
    Pivot to internal network or disrupt service

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK

2 techniques across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires (1) valid credentials on the target device - the CVSS vector's PR:H indicates high-privilege/administrative access is needed, so this is an authenticated attack, and (2) network reachability to the AP's management/control service to deliver the crafted packets (AV:N, AC:L, no user interaction). The specific trigger is sending crafted packets containing malicious commands to the device's command-processing interface, which fails to validate input. Limiting factors that reduce real-world risk: the mandatory high-privilege credential requirement (not exploitable by an unauthenticated attacker), the need for network path to the management plane (mitigated by management-VLAN segmentation and non-exposure to the internet), and applicability only to the six listed DS-3WAP wireless AP models.

Impact

The signals are moderately, not maximally, alarming. CVSS is 7.2 (High) driven by AV:N/AC:L and triple-high C/I/A, but the mitigating factor is PR:H - a valid high-privilege credential is required, which substantially narrows the realistic attacker population to insiders, credential-theft scenarios, or devices left on default/weak admin passwords. No EPSS score is provided, so exploitation-probability cannot be quantified; no SSVC decision data is supplied; the vulnerability is not in CISA KEV and no POC is referenced, so there is currently no evidence of active or automatable exploitation. The description ('network', 'crafted packets') is consistent with the AV:N vector, so there is no vector-versus-description conflict to flag. Net assessment: a genuine post-authentication device-takeover risk that matters most where these APs are internet-exposed or where admin credentials are shared/weak, but absent KEV/EPSS/POC data this is not evidence of widespread opportunistic exploitation - treat as a scheduled-patch priority rather than an emergency for well-segmented, strong-credential deployments.

Exploit ScenarioDerived

An attacker who has obtained valid administrative credentials - for example a malicious insider, or an outsider who harvested a reused/default AP password - sends specially crafted management packets containing embedded shell commands to a reachable DS-3WAP-series access point. The insufficiently validated input is executed by the device, giving the attacker arbitrary command execution on the AP, which they can use to intercept wireless traffic, pivot into the internal network, or brick the device. No public POC is referenced, and the low attack complexity (AC:L) means that once credentials and network reach are in hand, exploitation is straightforward.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.9% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 31, 2026

Authenticated command execution affects several Hikvision wireless access points (DS-3WAP521-SI, DS-3WAP522-SI, DS-3WAP621E-SI, DS-3WAP622E-SI, DS-3WAP623E-SI, DS-3WAP622G-SI), where insufficient input validation lets an attacker holding valid device credentials send crafted packets carrying malicious commands to achieve arbitrary command execution on the device. The CVSS 3.1 vector (7.2, AV:N/AC:L/PR:H/UI:N) indicates a network-reachable but high-privilege (authenticated) attack with full confidentiality, integrity, and availability impact. There is no public exploit identified at time of analysis and the issue is not listed in CISA KEV; the vendor has published a security advisory.

RemediationAI

Patch available per vendor advisory: apply the firmware update referenced in Hikvision's security advisory (https://www.hikvision.com/en/support/cybersecurity/security-advisory/command-execution-vulnerability-in-some-wireless-ap-products/) for each affected model; an exact fixed firmware version is not stated in the provided data, so confirm the correct build for your specific model directly from that advisory. Until patched, reduce exposure by restricting management access: place the AP management interface on an isolated management VLAN and block administrative access from user/guest and untrusted networks (trade-off: legitimate remote administration must then originate from that trusted segment), ensure the AP is never reachable from the internet, and rotate all administrative credentials to strong unique passwords to counter the PR:H prerequisite (trade-off: none material beyond operational effort). Because exploitation requires valid credentials, tightly limiting who holds AP admin accounts and monitoring device management logs for anomalous command activity are effective compensating controls.

Affected VersionsENISA

DS-3WAP623E-SI V1.1.6601 build251223 and earlier
DS-3WAP622G-SI V1.1.6601 build251223 and earlier
DS-3WAP622E-SI V1.1.6601 build251223 and earlier
DS-3WAP522-SI V1.1.6601 build251223 and earlier
DS-3WAP521-SI V1.1.6601 build251223 and earlier
DS-3WAP621E-SI V1.1.6601 build251223 and earlier

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected devices are Hikvision enterprise/SMB Wi-Fi access points in the DS-3WAP5xx/6xx-SI product family, embedded network appliances running a proprietary management firmware that accepts administrative/control packets over the network. The root cause is insufficient input validation on data contained in these crafted packets: attacker-supplied content is passed into an underlying command or shell context without adequate sanitization, permitting OS command injection (CWE-78-class behavior, although the input lists CWE as N/A). Because access points typically run their management services as a privileged system account, injected commands execute with elevated rights on the embedded OS. The CPE set precisely scopes the affected models to six application-level Hikvision AP identifiers, but no firmware version boundaries are provided in the CPE strings.

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Severity by source

Vendor (hikvision) PRIMARY 7.2 HIGH
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 7.2 HIGH

Network-delivered crafted packets (AV:N/AC:L) but valid high-privilege admin credentials required (PR:H); arbitrary command execution yields full C/I/A impact on the unchanged device scope.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (hikvision).

CVSS VectorVendor: hikvision

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Some Hikvision Wireless Access Points are vulnerable to authenticated command execution due to insufficient input validation. Attackers with valid credentials can exploit this flaw by sending crafted packets containing malicious commands to affected devices, leading to arbitrary command execution.

Executive ViewAI

Why It Matters

Hikvision wireless access points in enterprise networks (DS-3WAP521-SI, DS-3WAP522-SI, DS-3WAP621E-SI, DS-3WAP622E-SI, DS-3WAP623E-SI, DS-3WAP622G-SI) are vulnerable to complete infrastructure compromise through authenticated remote command execution, creating a direct pathway for insider threats and credential-based attacks. With no vendor patch available, this exposure window remains indefinite, requiring immediate compensating controls. Leadership must prioritize securing administrator access to these devices and establish a remediation timeline aligned with eventual firmware updates.

Business Impact: High
Compensating Controls

Isolate access points from critical systems using network segmentation; restrict administrative access to allowlisted IP addresses and enforce multi-factor authentication where supported; disable remote management and permit only local administration over secure channels; deploy network monitoring to detect anomalous command execution patterns on affected devices; maintain an audit log of all administrative access and configuration changes.

Threat Intelligence Overview

EPSS Score
0.9%
Top 44% exploitable
Prevalence
Low
niche Hikvision wireless AP models, limited enterprise footprint vs its cameras
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.9%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

37
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

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