Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2015-3143

20
FAUCET Score

CVE-2015-3143 describes a vulnerability in cURL and libcurl versions 7.10.6 through 7.41.0, affecting products from vendors like Apple, Canonical, Debian, Haxx, and HP. This flaw prevents proper re-use of NTLM connections, enabling remote attackers to impersonate other users through unauthenticated requests. With a CVSS score of 5.0, this vulnerability is network-exploitable with low attack complexity, requiring no authentication, and could lead to partial integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.10.6CPE matchmatch criteria
cpe:2.3:a:haxx:curl:7.10.6:*:*:*:*:*:*:*
7.10.7CPE matchmatch criteria
cpe:2.3:a:haxx:curl:7.10.7:*:*:*:*:*:*:*
7.10.8CPE matchmatch criteria
cpe:2.3:a:haxx:curl:7.10.8:*:*:*:*:*:*:*
7.11.0CPE matchmatch criteria
cpe:2.3:a:haxx:curl:7.11.0:*:*:*:*:*:*:*
7.11.1CPE matchmatch criteria
cpe:2.3:a:haxx:curl:7.11.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
16.22%
Probability of exploitation in next 30 days
EPSS Percentile
96.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1622 is in the 96th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (7)

jitsipatch availablevia llm_extracted
Fixed in: 7.41.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: curl-0:7.29.0-25.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: curl-0:7.19.7-46.el6
View patch
sierra_wirelesspatch availablevia llm_extracted
Fixed in: 7.41.0
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Virtualization 3Fixed in: mingw-virt-viewer
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: curl
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 1.2Fixed in: curl

Vendor Advisories (3)

redhatCVE-2015-3143Moderate

curl: re-using authenticated connection when unauthenticated

Apr 22, 2015
sierra_wirelessllm-sierra_wireless-1c0537a4c50ccb6cMEDIUM

Reusing authenticated connection when unauthenticated

Apr 22, 2015
jitsillm-jitsi-43341dc095459da9MEDIUM

Reusing authenticated connection when unauthenticated

Apr 22, 2015

References

advisories.mageia.org / MGASA-2015-0179.html
curl.haxx.se / docs/adv_20150422A.html
Vendor Advisory
kb.juniper.net / InfoCenter/index
lists.apple.com / archives/security-announce/2015/Aug/msg00001.html
lists.fedoraproject.org / pipermail/package-announce/2015-April/155957.html
lists.fedoraproject.org / pipermail/package-announce/2015-April/156250.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/156945.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/157017.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/157188.html
lists.opensuse.org / opensuse-updates/2015-04/msg00057.html
marc.info
Third Party Advisory
rhn.redhat.com / errata/RHSA-2015-1254.html
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Vendor Advisory
security.gentoo.org / glsa/201509-02
support.apple.com / kb/HT205031
debian.org / security/2015/dsa-3232
mandriva.com / security/advisories
mandriva.com / security/advisories
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/74299
securitytracker.com / id/1032232
ubuntu.com / usn/USN-2591-1