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CVE-2015-1473

18
FAUCET Score

CVE-2015-1473 is a denial-of-service vulnerability in the GNU C Library (glibc) affecting versions prior to 2.21, including Canonical Ubuntu Linux. The flaw, residing in the ADDW macro within stdio-common/vfscanf.c, stems from improper data-type size consideration when using the alloca function during wscanf calls. This can lead to a segmentation fault or memory corruption via a long line with wide characters. With a CVSS score of 6.4, this vulnerability is rated as medium severity, indicating a network-exploitable attack with low complexity, requiring no authentication, and potentially leading to partial integrity and availability impacts. The EPSS score is very low (0.00449), suggesting a minimal likelihood of exploitation. There is no evidence of active exploitation, no known exploit code in Metasploit, Nuclei, or ExploitDB, and it is not listed in CISA's KEV catalog. Community discussion and media coverage are also absent, indicating a lack of widespread attention or exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
10.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:lts:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
14.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*
<= 2.20CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.4MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.13%
Probability of exploitation in next 30 days
EPSS Percentile
80.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0213 is in the 69th 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 (5)

microsoftpatch availablevia msrc
Product: azl3 dietlibc 0.34-7 on Azure Linux 3.0Fixed in: 0.34-7
microsoftpatch availablevia msrc
Product: 16819-17084Fixed in: 0.34-7
microsoftpatch availablevia msrc
Product: 16819-16817Fixed in: 0.34-7
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: glibc-0:2.17-105.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.1 Extended Update SupportFixed in: glibc-0:2.17-79.el7_1
View patch

Vendor Advisories (2)

microsoft2015-Apr/CVE-2015-1473Moderate

The GNU C Library (aka glibc or libc6) allows context-dependent attackers to cause a denial of service

Apr 2, 2015
redhatCVE-2015-1473Low

glibc: Stack-overflow in glibc swscanf

Feb 21, 2014

References

openwall.com / lists/oss-security/2015/02/04/1
sourceware.org / git/gitweb.cgi
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/72499
ubuntu.com / usn/USN-2519-1