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CVE-2017-15670

32
FAUCET Score

CVE-2017-15670 is a critical heap-based buffer overflow vulnerability affecting GNU C Library (glibc) versions prior to 2.27. It stems from an off-by-one error in the glob function when processing home directories using the "~" operator followed by a long string. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, its high severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.26CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.98%
Probability of exploitation in next 30 days
EPSS Percentile
85.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0298 is in the 77th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc-0:2.12-1.212.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: glibc-0:2.17-222.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: compat-glibc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: glibc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: compat-glibc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: compat-glibc

Vendor Advisories (1)

redhatCVE-2017-15670Moderate

glibc: Buffer overflow in glob with GLOB_TILDE

Oct 19, 2017

References

access.redhat.com / errata/RHSA-2018:0805
access.redhat.com / errata/RHSA-2018:1879
sourceware.org / bugzilla/show_bug.cgi
Issue TrackingPatchThird Party Advisory
securityfocus.com / bid/101521