CVE-2013-4166: The gpg_ctx_add_recipient function in camel/camel-gpg-context.c in GNOME Evolution 3.8.4 and earlier and Evolu

Q: How do I fix CVE-2013-4166?

evolution: upgrade to newer than 3.8.4; evolution data server: upgrade to newer than 3.9.5; enterprise linux desktop: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2013-4166 being exploited?

CVE-2013-4166 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2013-4166 affect?

CVE-2013-4166 affects evolution, evolution data server, enterprise linux desktop. Severity is high (CVSS 7.5). The gpg_ctx_add_recipient function in camel/camel-gpg-context.c in GNOME Evolution 3.8.4 and earlier and Evolution Data Server 3.9.5 and earlier does not properly select the GPG key to use for email encryption, which might cause the email t

Q: How urgent is CVE-2013-4166?

Priority 56/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.5REMOTEWATCHLISTUPGRADEUPGRADEMITIGATE

CVE-2013-4166 is a high-severity flaw (CVSS 7.5) affecting evolution, evolution data server, enterprise linux desktop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The gpg_ctx_add_recipient function in camel/camel-gpg-context.c in GNOME Evolution 3.8.4 and earlier and Evolution Data Server 3.9.5 and earlier does not properly select the GPG key to use for email encryption, which might cause the email to be encrypted with the wrong key and allow remote attackers to obtain sensitive information.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-200
Published	2020-02-06
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: gnome · redhat

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-02-06 15:15 UTCPublished CVE record published
2026-06-16 23:56 UTCUpdated Record last modified

gnome evolution UPGRADE

Affected: <= 3.8.4

Fixed in: newer than 3.8.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy evolution || rpm -q evolution || evolution --version

2. UPGRADE to newer than 3.8.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade evolution

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade evolution

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

gnome evolution data server UPGRADE

Affected: <= 3.9.5

Fixed in: newer than 3.9.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy evolution-data-server || rpm -q evolution-data-server || evolution-data-server --version

2. UPGRADE to newer than 3.9.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade evolution-data-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade evolution-data-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

redhat enterprise linux desktop MITIGATE

Affected: 6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux server MITIGATE

Affected: 6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux workstation MITIGATE

Affected: 6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-4166?

evolution: upgrade to newer than 3.8.4; evolution data server: upgrade to newer than 3.9.5; enterprise linux desktop: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-4166 being exploited?

CVE-2013-4166 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-4166 affect?

CVE-2013-4166 affects evolution, evolution data server, enterprise linux desktop. Severity is high (CVSS 7.5). The gpg_ctx_add_recipient function in camel/camel-gpg-context.c in GNOME Evolution 3.8.4 and earlier and Evolution Data Server 3.9.5 and earlier does not properly select the GPG key to use for email encryption, which might cause the email t

How urgent is CVE-2013-4166?

Priority 56/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Related CVEs

CVE-2024-29844 CRITICAL 9.8 UPGRADE Default credentials on the Web Interface of Evolution Controller 2.x allows anyone to log in to the server dir
CVE-2024-29843 HIGH 7.5 UPGRADE The Web interface of Evolution Controller Versions 2.04.560.31.03.2024 and below contains poorly configured ac
CVE-2024-29842 HIGH 7.5 UPGRADE The Web interface of Evolution Controller Versions 2.04.560.31.03.2024 and below contains poorly configured ac
CVE-2024-29841 HIGH 7.5 UPGRADE The Web interface of Evolution Controller Versions 2.04.560.31.03.2024 and below contains poorly configured ac
CVE-2024-29840 HIGH 7.5 UPGRADE The Web interface of Evolution Controller Versions 2.04.560.31.03.2024 and below contains poorly configured ac

References

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