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…

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).

Scores

EPSS (exploitation in 30 days)

6.4% · top 6.3% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

• heap-based buffer overflow
• CWE-787 (opens in a new tab)All about CWE-787 and its CVEs

Affected products

• curl before 7.61.0

  • affected curl before 7.61.0

References (6)

• 1041280 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• https://github.com/curl/curl/commit/ba1dbd78e5f1ed67c1b8d37ac89d90e5e330b628 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://curl.haxx.se/docs/adv_2018-70a2.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• GLSA-201807-04 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• RHSA-2018:2486 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• USN-3710-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2018-0500](https://trackcve.app/badge/CVE-2018-0500.svg)](https://trackcve.app/cve/CVE-2018-0500)

Record last updated 5 Aug 2024, 03:28 UTC.