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CVE-2008-2142

19
FAUCET Score

CVE-2008-2142 describes a vulnerability in Emacs 21 and XEmacs where the automatic loading and execution of .flc (fast lock) files, associated with edited files, allows for user-assisted arbitrary code execution. This vulnerability has a CVSS score of 6.8, indicating a medium severity due to its network-based attack vector and medium attack complexity, potentially leading to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
21.3.1CPE matchmatch criteria
cpe:2.3:a:gnu:emacs:21.3.1:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:gnu:xemacs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.66%
Probability of exploitation in next 30 days
EPSS Percentile
88.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0366 is in the 84th percentile among its peer group of 19,956 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

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: emacs
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: xemacs
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: emacs

Vendor Advisories (1)

redhatCVE-2008-2142Low

emacs: fast-lock-mode arbitrary lisp code execution

May 9, 2008

References

lists.gnu.org / archive/html/emacs-devel/2008-05/msg00645.html
lists.opensuse.org / opensuse-security-announce/2008-06/msg00001.html
bugs.gentoo.org / show_bug.cgi
secunia.com / advisories/30199
secunia.com / advisories/30216
secunia.com / advisories/30303
secunia.com / advisories/30581
secunia.com / advisories/30827
secunia.com / advisories/34004
security.gentoo.org / glsa/glsa-200902-06.xml
exchange.xforce.ibmcloud.com / vulnerabilities/42362
issues.rpath.com / browse/RPL-2529
redhat.com / archives/fedora-package-announce/2008-June/msg00736.html
redhat.com / archives/fedora-package-announce/2008-June/msg00782.html
thread.gmane.org / gmane.emacs.devel/96903
Exploit
tracker.xemacs.org / XEmacs/its/issue378
wiki.rpath.com / wiki/Advisories:rPSA-2008-0177
mandriva.com / security/advisories
mandriva.com / security/advisories
securityfocus.com / archive/1/492657/100/0/threaded
securityfocus.com / bid/29176
securitytracker.com / id
vupen.com / english/advisories/2008/1539/references
vupen.com / english/advisories/2008/1540/references