CVE-2018-1000301

curl version curl 7.20.0 to and including curl 7.59.0 contains a CWE-126: Buffer Over-read vulnerability in denial of service that can result in curl can be tricked into reading data beyond the end of a heap based buffer used to store downloaded RTSP content.. This vulnerability appears to have been fixed in curl < 7.20.0 and curl >= 7.60.0.

Published: 2018-05-24 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-1000301 is rated High Risk (66.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.84%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-1000301

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-26 2.71% 2.84% +0.13%
2 2026-05-06 2.79% 2.71% -0.07%
3 2026-04-23 — 2.79% —

Full EPSS history (32 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1000301

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0
9.1 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.2 [email protected]
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2018-1000301

OS Trackers for CVE-2018-1000301

vendor priority summary link
alpine — CVE-2018-1000301: 1 source package rows (curl); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2018-1000301
debian not yet assigned CVE-2018-1000301 not yet assigned priority: Debian including 1 source packages (curl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-1000301
gentoo normal CVE-2018-1000301: 1 GLSA(s) (201806-05), 1 atom(s) (net-misc/curl); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-1000301
redhat medium — https://access.redhat.com/security/cve/CVE-2018-1000301
ubuntu medium CVE-2018-1000301 medium priority: Ubuntu including 1 source packages (curl), 5 status rows across 5 suites (artful, bionic, trusty, upstream, xenial): released 5. https://ubuntu.com/security/CVE-2018-1000301

Affected software / configurations for CVE-2018-1000301

Vendor Product Version Raw CPE
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 17.10 cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
haxx curl >= 7.20.0, <= 7.59.0 cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
oracle communications_webrtc_session_controller < 7.2 cpe:2.3:a:oracle:communications_webrtc_session_controller:*:*:*:*:*:*:*:*
oracle enterprise_manager_ops_center 12.2.2 cpe:2.3:a:oracle:enterprise_manager_ops_center:12.2.2:*:*:*:*:*:*:*
oracle enterprise_manager_ops_center 12.3.3 cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.55 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.55:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.56 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.56:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.57 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*

References for CVE-2018-1000301

URL Tags
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html Patch
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html Patch
http://www.securityfocus.com/bid/104225 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040931 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHBA-2019:0327 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3157 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3558 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0544
https://access.redhat.com/errata/RHSA-2020:0594
https://curl.haxx.se/docs/adv_2018-b138.html Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00010.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/201806-05 Third Party Advisory
https://usn.ubuntu.com/3598-2/ Third Party Advisory
https://usn.ubuntu.com/3648-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4202 Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html Patch Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
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