CVE-2017-8816

CRITICAL
9.8
CVSS Score
Published: November 29, 2017 at 06:00 PM UTC
Updated: June 17, 2026 at 01:27 AM UTC
3 products affected across 2 vendorsDebian LinuxCurlLibcurl

Using curl and libcurl before 7.57.0 by N/A?

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Severity
CRITICAL9.8
Exploit prediction
EPSS 9%
SSVC
No known exploit

Description

The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer overflow and resultant buffer overflow, and application crash) or possibly have unspecified other impact via vectors involving long user and password fields.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

7.36.0 < v ≤ 7.56.1
7.36.0 ≤ v ≤ 7.56.1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (8)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/101998
VDB Entryx_refsource_SECTRACKThird Party Advisory
http://www.securitytracker.com/id/1039896
x_refsource_CONFIRMMitigationVendor Advisory
https://curl.haxx.se/docs/adv_2017-12e7.html
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
https://security.gentoo.org/glsa/201712-04
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
https://www.debian.org/security/2017/dsa-4051

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

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