CVE-2026-49197: Predator Connect W6x: Improper Authentication
Web endpoints intended for the Acer Connect app improperly validate the HTTP Authorization header, failing to block requests when Base64 decoding fails.
HarborGuard Analysis
HarborGuard analysisSynopsis
Improper authentication in the Acer Predator Connect W6x router lets attackers reach web endpoints meant for the Acer Connect app without valid credentials, because the HTTP Authorization header is treated as authenticated when Base64 decoding fails. The flaw is reachable over the network with no authentication and no user interaction, and successful exploitation yields full read, write, and availability impact on the device and on systems it manages. No fix version has been published; HarborGuard tracks the advisory for patch availability.
HarborGuard Coverage
Detection is available across every HarborGuard environment, with the advisory ingested from upstream feeds within minutes of publication and matched against images in customer registries and CI pipelines. Coverage includes custom-built images that embed or repackage Predator Connect W6x firmware components.
AvailableTriage is available with the published CVSS v4.0 score of 10.0 (Critical) reweighted by each customer's compliance policy, so environments that flag internet-exposed network gear escalate faster than isolated lab images. Findings are routed to the inbox configured for critical network-device CVEs inside each customer org.
AvailableNo upstream fix has been published, so HarborGuard re-checks the advisory on every ingest cycle and will make a patched-image rebuild available the moment Acer ships a corrected version. For customers who opt into auto-remediation, that rebuild will trigger a regression run and a PR opened against affected workloads automatically.
Pending upstreamExploit Conditions
- Network reachabilityRequired
The attacker must reach the device's web endpoints over the network (AV:N).
- AuthenticationNot required
PR:N: no account or credential is needed; a malformed Authorization header is enough to bypass the check.
- Victim interactionNot required
UI:N: the attacker drives the request directly against the endpoint, with no user action involved.
- Attack complexityDetail
AC:L: the exploit is reliable, requiring only a crafted Authorization header that fails Base64 decoding.
Blast Radius
- Reads configuration, credentials, and any data exposed through the Acer Connect app endpoints (VC:H).
- Modifies device configuration, including network, routing, and management settings (VI:H).
- Disrupts or disables the router, cutting connectivity for everything behind it (VA:H).
- Pivots into downstream systems the router manages or trusts, with high impact on their confidentiality, integrity, and availability (SC:H/SI:H/SA:H).
How HarborGuard Handles This
Available on HarborGuard: continuous monitoring of the Acer advisory, with the CVE matched against every scanned image (including custom firmware bundles) and routed to the critical-network-device inbox per each customer's policy. Until Acer publishes a fixed version, compensating controls are surfaced in the finding, such as blocking external access to the management web endpoints, isolating the device on a dedicated management VLAN, and adding egress filtering so a compromised unit cannot reach arbitrary destinations. The moment an upstream fix ships, a patched-image rebuild becomes available automatically, and environments with auto-remediation enabled get a regression run and a PR opened against affected workloads without manual intervention.
Metrics
- CVSS v4.0
- 10.0
- Severity
- CRITICAL
- Fixed in
- —
- Affected Products
- 1
- Acer / Predator Connect W6x≤ *
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H