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Fencer Vulns
medium 6.7

CVE-2023-21635 json

Buffer Copy without Checking Size of Input in Data Network Stack & Connectivity

published 2023-07-04 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-25802

cvss
6.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

Memory Corruption in Data Network Stack & Connectivity when sim gets detected on telephony.

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Qualcomm, Inc. Snapdragon
  • qualcomm aqt1000_firmware
  • qualcomm csrb31024_firmware
  • qualcomm fastconnect_6200_firmware
  • qualcomm fastconnect_6800_firmware
  • qualcomm fastconnect_6900_firmware
  • qualcomm qca6391_firmware
  • qualcomm qca6420_firmware
  • qualcomm qca6426_firmware
  • qualcomm qca6430_firmware
  • qualcomm qca6436_firmware
  • qualcomm qca6564_firmware
  • qualcomm qca6564au_firmware
  • qualcomm qca6574a_firmware
  • qualcomm qca6574au_firmware
  • qualcomm qca6595au_firmware
  • qualcomm qca6696_firmware
  • qualcomm sa6145p_firmware
  • qualcomm sa6150p_firmware
  • qualcomm sa6155p_firmware
  • qualcomm sa8145p_firmware
  • qualcomm sa8150p_firmware
  • qualcomm sa8155p_firmware
  • qualcomm sa8195p_firmware
  • qualcomm sd855_firmware
  • qualcomm sd865_5g_firmware
  • qualcomm snapdragon_855_mobile_platform_firmware
  • qualcomm snapdragon_865_5g_mobile_platform_firmware
  • qualcomm snapdragon_x55_5g_modem-rf_system_firmware
  • qualcomm snapdragon_xr2_5g_platform_firmware
  • qualcomm snapdragon_auto_4g_modem_firmware
  • qualcomm sw5100_firmware
  • qualcomm sw5100p_firmware
  • qualcomm sxr2130_firmware
  • qualcomm wcd9341_firmware
  • qualcomm wcd9380_firmware
  • qualcomm wcn3610_firmware
  • qualcomm wcn3660b_firmware
  • qualcomm wcn3680b_firmware
  • qualcomm wcn3980_firmware
  • qualcomm wcn3988_firmware
  • qualcomm wsa8810_firmware
  • qualcomm wsa8815_firmware
  • qualcomm wsa8830_firmware
  • qualcomm wsa8835_firmware

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input
  • CWE-787 Out-of-bounds Write

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.