CVE-2026-6069
NASM’s disasm() function contains a stack based buffer overflow when formatting disassembly output, allowing an attacker triggered out-of-bounds write when `slen` exceeds the buffer capacity.
Published Updated
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nasm vulnerabilities
Vulnerabilities published for nasm in the last 30 days: 0. Listed in the KEV catalogue: 0.
Vulnerabilities: 46
CVE-2026-6068
NASM contains a heap use after free vulnerability in response file (-@) processing where a dangling pointer to freed memory is stored in the global depend_file and later dereferenced, as the response-file buffer is freed before the pointer is used, allowing for data corruption or remote code execution.
Published UpdatedCVE-2026-6067
A heap buffer overflow vulnerability exists in the Netwide Assembler (NASM) due to a lack of bounds checking in the obj_directive() function. This vulnerability can be exploited by a user assembling a malicious .asm file, potentially leading to heap memory corruption, denial of service (crash), and arbitrary code execution.
Published UpdatedNASM Netwide Assember parser.c parse_line stack-based overflow
A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected is the function parse_line of the file parser.c. The manipulation leads to stack-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.
Published UpdatedNASM Netwide Assember nasm.c assemble_file stack-based overflow
A vulnerability was identified in NASM Netwide Assember 2.17rc0. This issue affects the function assemble_file of the file nasm.c. The manipulation leads to stack-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.
Published UpdatedNASM Netwide Assember preproc.c parse_smacro_template null pointer dereference
A vulnerability was determined in NASM Netwide Assember 2.17rc0. This vulnerability affects the function parse_smacro_template of the file preproc.c. The manipulation leads to null pointer dereference. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.
Published UpdatedNASM Netwide Assember outmacho.c macho_no_dead_strip heap-based overflow
A vulnerability was found in NASM Netwide Assember 2.17rc0. This affects the function macho_no_dead_strip of the file outmacho.c. The manipulation leads to heap-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.
Published UpdatedNASM Netwide Assember preproc.c do_directive use after free
A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.
Published UpdatedCVE-2023-38668
Stack-based buffer over-read in disasm in nasm 2.16 allows attackers to cause a denial of service (crash).
Published UpdatedCVE-2023-38667
Stack-based buffer over-read in function disasm in nasm 2.16 allows attackers to cause a denial of service.
Published UpdatedCVE-2023-38665
Null pointer dereference in ieee_write_file in nasm 2.16rc0 allows attackers to cause a denial of service (crash).
Published UpdatedCVE-2020-21686
A stack-use-after-scope issue discovered in expand_mmac_params function in preproc.c in nasm before 2.15.04 allows remote attackers to cause a denial of service via crafted asm file.
Published UpdatedCVE-2020-21528
A Segmentation Fault issue discovered in in ieee_segment function in outieee.c in nasm 2.14.03 and 2.15 allows remote attackers to cause a denial of service via crafted assembly file.
Published UpdatedCVE-2020-18780
A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
Published UpdatedCVE-2022-44370
NASM v2.16 was discovered to contain a heap buffer overflow in the component quote_for_pmake() asm/nasm.c:856
Published UpdatedCVE-2022-44369
NASM 2.16 (development) is vulnerable to 476: Null Pointer Dereference via output/outaout.c.
Published UpdatedCVE-2022-44368
NASM v2.16 was discovered to contain a null pointer deference in the NASM component
Published UpdatedCVE-2022-46457
NASM v2.16 was discovered to contain a segmentation violation in the component ieee_write_file at /output/outieee.c.
Published UpdatedCVE-2022-46456
NASM v2.16 was discovered to contain a global buffer overflow in the component dbgdbg_typevalue at /output/outdbg.c.
Published UpdatedCVE-2022-41420
nasm v2.16 was discovered to contain a stack overflow in the Ndisasm component
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