CVE-2018-15560: pycryptodome Integer Overflow or Wraparound
Vulnerability summary
CVE-2018-15560 is a high (CVSS 7.5) Integer Overflow or Wraparound vulnerability in pycryptodome. EPSS estimates a 1.76% chance of exploitation in the next 30 days, higher than 77.9% of scored vulnerabilities. 2 public exploits are recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Timeline
- 20-08-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 2 sources · 3 versions- OSV · PypiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.76%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.76% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
2 foundPycryptodome
Maturity: poc
Exploit Reference (whitehatck01.blogspot.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Pycryptodome1 product
- pycryptodome< 3.6.6
PyPI1 product
- pycryptodome< 3.6.6
2 vendors · 2 products
References
6 links- whitehatck01.blogspot.com/2018/08/integer-overflow-vulnerability-in.htmlX Refsource MISCExploitThird Party AdvisoryWEBARTICLE
