CVE-2026-59886
pyasn1 pyasn1 취약점
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the univ.Real type converted its mantissa, base, and exponent value to a Python float using exact big-integer exponentiation. A BER, CER, or DER encoded REAL value only a few bytes long can carry a very large exponent, causing float conversion through prettyPrint(), str(), comparison, arithmetic, int(), or an explicit float() call to consume excessive CPU and memory and hang applications that decode untrusted ASN.1 data and then print, log, or compare decoded objects. This issue is fixed in version 0.6.4.
- 대응 우선순위
- 점검
- CVSS
- 7.5
- EPSS
- 0.34% 백분위 26.0% · 2026.07.15 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.07.15