Ar8031 Firmware
CVE-2021-30316
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A local attacker with access to the system could corrupt memory to execute arbitrary code or crash the application. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAI
Possible out of bound memory access due to improper boundary check while creating HSYNC fence in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT,. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. Possible out of bound memory access due to improper boundary check while creating HSYNC fence in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables Affected products include: Qualcomm Ar8031 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Fsm10055 Firmware, Qualcomm Fsm10056 Firmware.
Know when Ar8031 Firmware gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Possible out of bound memory access due to improper boundary check while creating HSYNC fence in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables
Threat Intelligence Overview
NVD
CVE.org
EPSS
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Affected Products (CPE)NVD
More in Ar8031 Firmware
View allA Qualcomm chipset vulnerability (CVE-2026-21385) causes memory corruption through improper integer handling during memo
Qualcomm Adreno GPU drivers in Chrome contain a use-after-free vulnerability (CVE-2025-27038, CVSS 7.5) enabling memory
Memory Corruption in modem due to improper length check while copying into memory in Snapdragon Consumer IOT, Snapdragon
Cryptographic issues in WLAN during the group key handshake of the WPA/WPA2 protocol in Snapdragon Consumer IOT, Snapdra
Memory corruption in WLAN due to integer overflow to buffer overflow while parsing GTK frames. Rated critical severity (
Memory corruption in WLAN due to out of bound array access during connect/roaming in Snapdragon Auto, Snapdragon Compute
Cryptographic issue in WLAN due to improper check on return value while authentication handshake in Snapdragon Auto, Sna
memory corruption in video due to buffer overflow while parsing asf clips in Snapdragon Auto, Snapdragon Compute, Snapdr
Memory corruption in video due to buffer overflow while parsing ps video clips in Snapdragon Auto, Snapdragon Compute, S
Memory corruption in bluetooth due to integer overflow while processing HFP-UNIT profile in Snapdragon Auto, Snapdragon
Memory corruption in video driver due to double free while parsing ASF clip in Snapdragon Auto, Snapdragon Compute, Snap
Memory corruption due to buffer overflow while parsing MKV clips with invalid bitmap size in Snapdragon Auto, Snapdragon
GitHub PoC
Exploit-DB