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CVE-2018-16890

27
FAUCET Score

CVE-2018-16890 is a heap buffer out-of-bounds read vulnerability in libcurl versions 7.36.0 to before 7.64.0, affecting various products including Canonical, Debian, and Oracle. A malicious NTLM server can exploit an integer overflow in the NTLM type-2 message handling to cause a denial of service. Rated 7.5 HIGH on CVSS, this vulnerability has a network attack vector and low attack complexity, but no confidentiality or integrity impact. There is no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.36.0, < 7.64.0CPE matchmatch criteria
cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
18.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.35%
Probability of exploitation in next 30 days
EPSS Percentile
91.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0535 is in the 86th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

jitsipatch availablevia llm_extracted
Fixed in: 7.63.0
View patch
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: curl-0:7.61.1-11.el8
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services Apache HTTP Server 2.4.29 SP2
View patch
sierra_wirelesspatch availablevia llm_extracted
Fixed in: 7.63.0
View patch
redhatno patchvia redhat_api
Product: Red Hat JBoss Core ServicesFixed in: jbcs-httpd24-curl
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: httpd24-curl
redhatend of lifevia redhat_api
Product: .NET Core 2.1 on Red Hat Enterprise LinuxFixed in: rh-dotnet21-curl

Vendor Advisories (3)

redhatCVE-2018-16890Moderate

curl: NTLM type-2 heap out-of-bounds buffer read

Feb 6, 2019
sierra_wirelessllm-sierra_wireless-34aef62b90f170fbMEDIUM

NTLM type-2 out-of-bounds buffer read

Feb 6, 2019
jitsillm-jitsi-aff7e23f4159abdaMEDIUM

NTLM type-2 out-of-bounds buffer read

Feb 6, 2019

References

access.redhat.com / errata/RHSA-2019:3701
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingMitigationPatchThird Party Advisory
cert-portal.siemens.com / productcert/pdf/ssa-436177.pdf
Third Party Advisory
curl.haxx.se / docs/CVE-2018-16890.html
PatchVendor Advisory
lists.apache.org / thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
security.netapp.com / advisory/ntap-20190315-0001
PatchThird Party Advisory
support.f5.com / csp/article/K03314397
usn.ubuntu.com / 3882-1
Third Party Advisory
debian.org / security/2019/dsa-4386
Third Party Advisory
oracle.com / technetwork/security-advisory/cpuapr2019-5072813.html
PatchThird Party Advisory
oracle.com / technetwork/security-advisory/cpujul2019-5072835.html
PatchThird Party Advisory
securityfocus.com / bid/106947
Third Party AdvisoryVDB Entry