CVE-2026-58082
Low risk· EPSS 12%Exploitation Probability (EPSS)
Low risk12th percentile - higher than 12% of all known CVEs
Summary
The ISO-2022 encoding module used a stack buffer sized to MB_LEN_MAX (6 bytes) for intermediate character output. Some ISO-2022 variants can require up to 10 bytes per character, in which case conversions can trigger a stack buffer overflow of up to four bytes. An application that uses iconv(3) to convert untrusted input to or from one of the affected encodings may be vulnerable to buffer overflows if it uses one of the affected encoding modules.
Risk Assessment
Applications processing untrusted data with iconv may be exploited to execute arbitrary code or cause a crash.
Recommendation
Apply the vendor patch that increases the buffer size or properly checks limits in the ISO-2022 module.
Original NVD description (English source)
The ISO-2022 encoding module used a stack buffer sized to MB_LEN_MAX (6 bytes) for intermediate character output. Some ISO-2022 variants can require up to 10 bytes per character, in which case conversions can trigger a stack buffer overflow of up to four bytes. An application that uses iconv(3) to convert untrusted input to or from one of the affected encodings may be vulnerable to buffer overflows if it uses one of the affected encoding modules.