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-2013-4242

11
FAUCET Score

CVE-2013-4242 describes a cache side-channel vulnerability, known as Flush+Reload, affecting GnuPG before 1.4.14 and Libgcrypt before 1.5.3. This flaw allows local attackers to potentially extract private RSA keys from affected systems, including those running Debian, Canonical, and openSUSE. The vulnerability has a low severity CVSS score of 1.9, indicating a local attack vector with medium complexity and a partial impact on confidentiality. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

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:*:*:*:*:*
12.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
13.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.9LOW

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.53%
Probability of exploitation in next 30 days
EPSS Percentile
41.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0053 is in the 88th percentile among its peer group of 747 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, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libgcrypt-0:1.4.4-7.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: gnupg-0:1.4.5-18.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libgcrypt-0:1.4.5-11.el6_4
View patch
susevendor investigatingvia nvd_reference
View patch
ubuntuvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-4242Moderate

GnuPG susceptible to Yarom/Falkner flush+reload cache side-channel attack

Jul 22, 2013

References

bugs.debian.org / cgi-bin/bugreport.cgi
eprint.iacr.org / 2013/448
kb.juniper.net / InfoCenter/index
lists.gnupg.org / pipermail/gnupg-announce/2013q3/000330.html
lists.opensuse.org / opensuse-updates/2013-08/msg00003.html
Vendor Advisory
rhn.redhat.com / errata/RHSA-2013-1457.html
secunia.com / advisories/54318
Vendor Advisory
secunia.com / advisories/54321
Vendor Advisory
secunia.com / advisories/54332
Vendor Advisory
secunia.com / advisories/54375
Vendor Advisory
debian.org / security/2013/dsa-2730
debian.org / security/2013/dsa-2731
kb.cert.org / vuls/id/976534
US Government Resource
oracle.com / technetwork/topics/security/ovmbulletinjul2016-3090546.html
securityfocus.com / bid/61464
ubuntu.com / usn/USN-1923-1
Vendor Advisory