CVE & CISA-KEV Catalog

CVE-2018-0500

CRITICALEPSS 93th pctl
9.8
CVSS v3
NVD

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).

CWE-787Out-of-bounds Write

How to fix

Remediation Available
curlDebian
Fixed in:7.61.0-1CVE-2018-0500
Fixed in:7.61.0-1CVE-2018-0500
Fixed in:7.61.0-1CVE-2018-0500
Fixed in:7.61.0-1CVE-2018-0500
curlUbuntu
Fixed in:7.58.0-2ubuntu3.2USN-3710-1
libcurl3-gnutlsUbuntu
Fixed in:7.58.0-2ubuntu3.2USN-3710-1
libcurl3-nssUbuntu
Fixed in:7.58.0-2ubuntu3.2USN-3710-1
libcurl4Ubuntu
Fixed in:7.58.0-2ubuntu3.2USN-3710-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

6.43%probability of exploitation in 30 days
93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-22457Critical9.0100%KEV + RansomFix
CVE-2025-0282Critical9.0100%KEV + Ransom-
CVE-2015-3113Critical9.8100%KEVFix
CVE-2021-20038Critical9.8100%KEV + Ransom-
CVE-2023-4863High8.8100%KEVFix
CVE-2020-16040Medium6.5100%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.