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The Microchip SERCOM-G1 UART driver (drivers/serial/uartmchpsercomg1.c), used by the PIC32CM-JH SoC family, contains an out-of-bounds write in its asynchronous (DMA) receive path. When uartrxenable() is invoked with a one-byte receive buffer (len == 1) and CONFIGUARTMCHPASYNC is enabled, the RX-complete ISR starts a single-beat DMA transfer while a received byte is already pending in the SERCOM DATA register. On this SoC the peripheral-triggered DMA start sequencing then writes one byte past the end of the caller-supplied buffer (CWE-787).
The overflowed byte's value is the UART RX data supplied by the connected serial peer (adjacent attacker), while its size and location are fixed at one byte immediately after the buffer.
Exploitation requires the async UART config (not enabled by default on the in-tree PIC32CM-JH boards) and a consumer that enables RX with a one-byte buffer; impact is limited single-byte memory corruption adjacent to the RX buffer (possible crash / denial of service).
The defect shipped in v4.4.0. The fix reads the first byte with the CPU and, for one-byte buffers, performs no DMA at all; for larger buffers it sizes the DMA for the remaining len-1 bytes.
The GridTime 3000 GNSS Time Server leaks the access token in the URL parameters of some endpoints.
This issue affects GridTime 3000: from 1.0r0.03 through 1.1r0.0.
Improper neutralization of input during web page generation XSS vulnerability in the GridTime 3000 (password reset form) allows XSS. This issue affects GridTime 3000: from 1.0r0.03 before 1.2r0.0.
The GridTime 3000 GNSS Time Server has an open redirect vulnerability in the password change form submission.
This issue affects GridTime 3000: from 1.0r0.03 through 1.1r0.0.
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Microchip GridTime 3000 allows Cross-Site Scripting (XSS).
This issue affects GridTime 3000: from 1.0r0.03 through 1.1r0.0.
A privilege escalation vulnerability in Microchip IStaX allows an authenticated low-privileged user to recover a shared per-device cookie secret from their own webstaxauth session cookie and forge a new cookie with administrative privileges.This issue affects IStaX before 2026.03.
Use of Hard-coded Credentials vulnerability in Microchip Time Provider 4100 allows Malicious Manual Software Update.This issue affects Time Provider 4100: before 2.5.0.
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Microchip TimePictra allows Query System for Information.This issue affects TimePictra: from 11.0 through 11.3 SP2.
Missing Authentication for Critical Function vulnerability in Microchip TimePictra allows Configuration/Environment Manipulation.This issue affects TimePictra: from 11.0 through 11.3 SP2.
Download of Code Without Integrity Check vulnerability in Microchip Time Provider 4100 allows Malicious Manual Software Update.This issue affects Time Provider 4100: before 2.5.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Microchip Time Provider 4100 allows SQL Injection.This issue affects Time Provider 4100: before 2.5.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Microchip Time Provider 4100 allows OS Command Injection.This issue affects Time Provider 4100: before 2.5.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Microchip Time Provider 4100 allows OS Command Injection.This issue affects Time Provider 4100: before 2.5.
On Microchip RN4870 devices, when more than one consecutive PairReqNoInputNoOutput request is received, the device becomes incapable of completing the pairing process. A third party can inject a second PairReqNoInputNoOutput request just after a real one, causing the pair request to be blocked.
URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Microchip TimeProvider 4100 allows XSS Through HTTP Headers.This issue affects TimeProvider 4100: from 1.0.
Cross-Site Request Forgery (CSRF) vulnerability in Microchip TimeProvider 4100 allows Cross Site Request Forgery, Cross-Site Scripting (XSS).This issue affects TimeProvider 4100: from 1.0.
Improper Authentication vulnerability in Microchip TimeProvider 4100 (login modules) allows Session Hijacking.This issue affects TimeProvider 4100: from 1.0 before 2.4.7.
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Microchip TimeProvider 4100 (data plot modules) allows Reflected XSS.This issue affects TimeProvider 4100: from 1.0 before 2.4.7.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Microchip TimeProvider 4100 (Configuration modules) allows Command Injection.This issue affects TimeProvider 4100: from 1.0 before 2.4.7.
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Microchip TimeProvider 4100 (banner config modules) allows Cross-Site Scripting (XSS).This issue affects TimeProvider 4100: from 1.0 before 2.4.7.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Microchip TimeProvider 4100 (Data plot modules) allows SQL Injection.This issue affects TimeProvider 4100: from 1.0 before 2.4.7.
Improper Input Validation vulnerability in Microchip Techology Advanced Software Framework example DHCP server can cause remote code execution through a buffer overflow. This vulnerability is associated with program files tinydhcpserver.C and program routines lwipdhcpfindoption.
This issue affects Advanced Software Framework: through 3.52.0.2574.
ASF is no longer being supported. Apply provided workaround or migrate to an actively maintained framework.
If a SCSI READ(10) command is initiated via USB using the largest LBA (0xFFFFFFFF) with it's default block size of 512 and a count of 1,
the first 512 byte of the 0x80000000 memory area is returned to the user. If the block count is increased, the full RAM can be exposed.
The same method works to write to this memory area. If RAM contains pointers, those can be - depending on the application - overwritten to
return data from any other offset including Progam and Boot Flash.
A voltage glitch during the startup of EEFC NVM controllers on Microchip SAM E70/S70/V70/V71, SAM G55, SAM 4C/4S/4N/4E, and SAM 3S/3N/3U microcontrollers allows access to the memory bus via the debug interface even if the security bit is set.
A vulnerability has been identified in SIMATIC IPC1047E (All versions with maxView Storage Manager < V4.14.00.26068 on Windows), SIMATIC IPC647E (All versions with maxView Storage Manager < V4.14.00.26068 on Windows), SIMATIC IPC847E (All versions with maxView Storage Manager < V4.14.00.26068 on Windows). In default installations of maxView Storage Manager where Redfish® server is configured for remote system management, a vulnerability has been identified that can provide unauthorized access.
In default installations of Microchip maxView Storage Manager (for Adaptec Smart Storage Controllers) where Redfish server is configured for remote system management, unauthorized access can occur, with data modification and information disclosure. This affects 3.00.23484 through 4.14.00.26064 (except for the patched versions 3.07.23980 and 4.07.00.25339).
In Microchip MPLAB Net 3.6.1, TCP ISNs are improperly random.
A vulnerability has been identified in SIMATIC IPC1047 (All versions), SIMATIC IPC1047E (All versions with maxView Storage Manager < 4.09.00.25611 on Windows), SIMATIC IPC647D (All versions), SIMATIC IPC647E (All versions with maxView Storage Manager < 4.09.00.25611 on Windows), SIMATIC IPC847D (All versions), SIMATIC IPC847E (All versions with maxView Storage Manager < 4.09.00.25611 on Windows). The Adaptec Maxview application on affected devices is using a non-unique TLS certificate across installations to protect the communication from the local browser to the local application. A local attacker may use this key to decrypt intercepted local traffic between the browser and the application and could perform a man-in-the-middle attack in order to modify data in transit.
Microchip Technology (Microsemi) SyncServer S650 was discovered to contain a command injection vulnerability.
Nordic Semiconductor, Microchip Technology NRF5340-DK DT100112 was discovered to contain an issue which allows attackers to cause a Denial of Service (DoS) via a crafted ConReq packet.