CVE-2018-15560
CVSS v3
7.5
HIGH
EPSS Score
1.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
PyCryptodome before 3.6.6 has an integer overflow in the data_len variable in AESNI.c, related to the AESNI_encrypt and AESNI_decrypt functions, leading to the mishandling of messages shorter than 16 bytes.
Technical details
- Published
- 2018-08-20
Frequently asked questions
What is CVE-2018-15560?
PyCryptodome before 3.6.6 has an integer overflow in the data_len variable in AESNI.c, related to the AESNI_encrypt and AESNI_decrypt functions, leading to the mishandling of messages shorter than 16 bytes.
Is CVE-2018-15560 actively exploited?
Active exploitation of CVE-2018-15560 has not been confirmed. Its EPSS score was 1.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-15560?
CVE-2018-15560 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2018-15560 affecting your environment?
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