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CVE Record

CVE-2020-27302: A stack buffer overflow in Realtek RTL8710 (and other Ameba-based devices) can lead to remote code executio...

A stack buffer overflow in Realtek RTL8710 (and other Ameba-based devices) can lead to remote code execution via the "memcpy" function, when an attacker in Wi-Fi range sends a crafted "Encrypted GTK" value as part of the WPA2 4-way-handshake.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2020-27302 is a memory-safety flaw in Realtek RTL8710 and other Ameba-based Wi-Fi devices. An attacker within Wi-Fi range could send a crafted WPA2 handshake value and potentially run code on the device. The provided sources do not name specific product versions, CVSS severity, or confirmed fixes.

Executive priority

Prioritize discovery and vendor confirmation. The business risk is high where affected Wi-Fi modules sit in unmanaged or operational devices, but urgency depends on whether deployed assets actually use vulnerable Realtek/Ameba firmware.

Technical view

The CVE describes a stack buffer overflow triggered through memcpy while handling a crafted Encrypted GTK value during the WPA2 4-way handshake. The reported impact is remote code execution on Realtek RTL8710 and other Ameba-based devices. Product mapping is incomplete in the supplied record.

Likely exposure

Exposure is most likely in IoT, embedded, consumer, or operational devices that use Realtek RTL8710 or related Ameba Wi-Fi chipsets. The source bundle does not provide CPEs, exact firmware versions, or downstream device models, so asset discovery is the main uncertainty.

Exploitation context

The source bundle supports a Wi-Fi-range attack path and remote code execution impact. It does not show CISA KEV listing, active exploitation, public exploit availability, or weaponized exploitation evidence. Treat exploitation status as unconfirmed from these sources.

Researcher notes

Key gaps are missing CVSS, CWE, precise versions, CPEs, and remediation details in the supplied record. Avoid broad product claims without device-level confirmation. No active exploitation should be asserted from these sources.

Mitigation direction

  • Identify products using Realtek RTL8710 or Ameba Wi-Fi modules.
  • Check Realtek and device-vendor advisories for firmware updates or mitigations.
  • Prioritize updates for unmanaged, IoT, and operational wireless devices.
  • Segment affected wireless devices from critical business systems.
  • Retire unsupported affected devices if no vendor firmware is available.

Validation and detection

  • Inventory wireless devices and record chipset or module details.
  • Map device firmware versions against vendor advisories when available.
  • Review procurement records for Realtek RTL8710 or Ameba references.
  • Check wireless device networks for unsupported embedded endpoints.
  • Document unknown chipset devices for vendor confirmation.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2020-27302 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.