What’s Vulnerable › Vulnerabilities

CVE-2018-0500

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-07-11 · updated 2026-06-17
• Weakness: CWE-787

Description

Curl_smtp_escape_eob in lib/smtp.c in curl 7.54.1 to and including curl 7.60.0 has a heap-based buffer overflow that might be exploitable by an attacker who can control the data that curl transmits over SMTP with certain settings (i.e., use of a nonstandard --limit-rate argument or CURLOPT_BUFFERSIZE value).

Affected products

• Canonical Ubuntu Linux: 17.10, 18.04
• curl: from 7.54.1 through 7.60.0

References

• http://www.securitytracker.com/id/1041280
• https://access.redhat.com/errata/RHSA-2018:2486
• https://curl.haxx.se/docs/adv_2018-70a2.html
• https://github.com/curl/curl/commit/ba1dbd78e5f1ed67c1b8d37ac89d90e5e330b628
• https://security.gentoo.org/glsa/201807-04
• https://usn.ubuntu.com/3710-1/
• http://www.securitytracker.com/id/1041280
• https://access.redhat.com/errata/RHSA-2018:2486
• https://curl.haxx.se/docs/adv_2018-70a2.html
• https://github.com/curl/curl/commit/ba1dbd78e5f1ed67c1b8d37ac89d90e5e330b628
• https://security.gentoo.org/glsa/201807-04
• https://usn.ubuntu.com/3710-1/

Get alerted when CVE-2018-0500 or the next vulnerability affects your stack