CVE-2023-43520: Stack-based Buffer Overflow in WLAN HOST
Modified
Published 06-02-2024Last modified 09-05-2025
Vulnerability summary
CVE-2023-43520 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in qualcomm, inc. snapdragon. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.3% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
0.26%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Timeline
- 06-02-2024PublishedVulnerability first disclosed.
- 09-05-2025Last modifiedVulnerability information updated.
Description
Memory corruption when AP includes TID to link mapping IE in the beacons and STA is parsing the beacon TID to link mapping IE.
CVSS metrics
2 scores · 2 sources · 1 versionCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources2 sources · 8.6–9.8
- CVE.orgCNA8.6HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:HDiffers
EPSS trend
Probability
0.26%
Chance of exploitation in the next 30 days
Percentile
17%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.26% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Qualcomm69 products
- ar8035_firmwarena
- fastconnect_6900_firmwarena
- fastconnect_7800_firmwarena
- flight_rb5_5g_platform_firmwarena
- qam8255p_firmwarena
Qualcomm, inc.1 product
- snapdragonAR8035 | FastConnect 6900 | FastConnect 7800 | Flight RB5 5G Platform | QAM8255P | QAM8650P | QAM8775P | QAMSRV1H | QAMSRV1M | QCA6391 | QCA6554A | QCA6564AU | QCA6574 | QCA6574A | QCA6574AU | QCA6584AU | QCA6595 | QCA6595AU | QCA6688AQ | QCA6696 | QCA8081 | QCA8337 | QCC2073 | QCC2076 | QCC710 | QCM8550 | QCN6224 | QCN6274 | QCS7230 | QCS8250 | QCS8550 | QFW7114 | QFW7124 | QRB5165N | Qualcomm Video Collaboration VC5 Platform | Robotics RB5 Platform | SA6145P | SA6150P | SA6155P | SA8145P | SA8150P | SA8155P | SA8195P | SA8255P | SA8650P | SA8770P | SA8775P | SA9000P | SM8550P | Snapdragon 8+ Gen 2 Mobile Platform | Snapdragon AR2 Gen 1 Platform | Snapdragon X75 5G Modem-RF System | SRV1H | SRV1M | SSG2115P | SSG2125P | SXR1230P | SXR2230P | WCD9340 | WCD9380 | WCD9385 | WCD9390 | WCD9395 | WSA8830 | WSA8832 | WSA8835 | WSA8840 | WSA8845 | WSA8845H
2 vendors · 70 products