CVE-2013-4242

NONECVSS 0.0

0.0

GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka Flush+Reload.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 26.1%
KEV: Not listed

Published

August 19, 2013

Last Modified

April 29, 2026

References (32)

secalert@redhathttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=717880
secalert@redhathttp://eprint.iacr.org/2013/448
secalert@redhathttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
secalert@redhathttp://lists.gnupg.org/pipermail/gnupg-announce/2013q3/000330.html
secalert@redhathttp://lists.opensuse.org/opensuse-updates/2013-08/msg00003.html
secalert@redhathttp://rhn.redhat.com/errata/RHSA-2013-1457.html
secalert@redhathttp://secunia.com/advisories/54318
secalert@redhathttp://secunia.com/advisories/54321
secalert@redhathttp://secunia.com/advisories/54332
secalert@redhathttp://secunia.com/advisories/54375
secalert@redhathttp://www.debian.org/security/2013/dsa-2730
secalert@redhathttp://www.debian.org/security/2013/dsa-2731
secalert@redhathttp://www.kb.cert.org/vuls/id/976534
secalert@redhathttp://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
secalert@redhathttp://www.securityfocus.com/bid/61464

Patch Availability(3)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	gnupg (1.4.12-7ubuntu1.1) @ raring	2026-05-28	ubuntu
redhat	libgcrypt-0:1.4.5-11.el6_4	2013-10-24	redhat
redhat	gnupg-0:1.4.5-18.el5_10	2013-10-24	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 06:08 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-02 20:10 UTCepss_batch
2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 22:56 UTCEG score recompute
2026-05-28 22:56 UTCVendor advisory
2026-05-28 22:55 UTCGHSA enrichment
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch

Frequently asked(4)

What is CVE-2013-4242?

CVE-2013-4242 is a none vulnerability published on August 19, 2013. GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka Flush+Reload.

When was CVE-2013-4242 disclosed?

CVE-2013-4242 was first published in the National Vulnerability Database on August 19, 2013, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2013-4242 actively exploited?

CVE-2013-4242 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2013-4242?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-4242, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2013-4242

Published

Last Modified

References (32)

Patch Availability(3)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2013-4242?

Same vendor

Same CWE

CVE-2013-4242

📅 Published

🔄 Last Modified

🔗 References (32)

Patch Availability(3)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2013-4242?

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References (32)

Frequently asked(4)

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