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CVE-2018-15587

22
FAUCET Score

CVE-2018-15587 describes a vulnerability in GNOME Evolution, affecting versions through 3.28.2, where OpenPGP signatures can be spoofed. An attacker can craft an email containing a valid signature from a legitimate entity as an attachment, leading to the impersonation of that entity for arbitrary messages. This medium-severity vulnerability (CVSS 6.5) requires user interaction (UI:R) and has a network attack vector (AV:N) with low attack complexity (AC:L), primarily impacting integrity (I:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.28.2CPE matchmatch criteria
cpe:2.3:a:gnome:evolution:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.44%
Probability of exploitation in next 30 days
EPSS Percentile
82.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0244 is in the 92nd percentile among its peer group of 26,236 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: atk-0:2.28.1-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: evolution-0:3.28.5-8.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: evolution-data-server-0:3.28.5-4.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: evolution-ews-0:3.28.5-5.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: evolution-0:3.28.5-12.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: evolution-data-server-0:3.28.5-13.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: evolution-ews-0:3.28.5-9.el8
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: evolution

Vendor Advisories (1)

redhatCVE-2018-15587Moderate

evolution: specially crafted email leading to OpenPGP signatures being spoofed for arbitrary messages

May 27, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-05/msg00047.html
lists.opensuse.org / opensuse-security-announce/2019-05/msg00061.html
lists.opensuse.org / opensuse-security-announce/2019-06/msg00024.html
packetstormsecurity.com / files/152703/Johnny-You-Are-Fired.html
Third Party AdvisoryVDB Entry
bugzilla.gnome.org / show_bug.cgi
ExploitIssue TrackingVendor Advisory
seclists.org / fulldisclosure/2019/Apr/38
Mailing ListThird Party Advisory
github.com / RUB-NDS/Johnny-You-Are-Fired
github.com / RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
lists.debian.org / debian-lts-announce/2019/04/msg00027.html
Mailing ListThird Party Advisory
seclists.org / bugtraq/2019/Jun/7
usn.ubuntu.com / 3998-1
debian.org / security/2019/dsa-4457
openwall.com / lists/oss-security/2019/04/30/4
Mailing ListThird Party Advisory