What is CVE-2023-27986?

CVE-2023-27986 is a high-severity vulnerability in Gnu Emacs, classified under Code Injection. CVSS score: 7.8/10. Published 2023-03-09.

How severe is CVE-2023-27986?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-27986 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Gnu Emacs

CVE-2023-27986

emacsclient-mail.desktop in Emacs 28.1 through 28.2 is vulnerable to Emacs Lisp code injections through a crafted mailto: URI with unescaped double-quote characters. It is fixed in 29.0.90.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.005 (38.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Gnu Emacs
N/a — versions n/a

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

karimhabush/cyberowl

References

cve@mitre.org (Patch, Mailing List)
cve@mitre.org (Patch, Issue Tracking)
cve@mitre.org (mailing-list, Patch, Mailing List)
cve@mitre.org

Frequently asked questions

What is CVE-2023-27986?: CVE-2023-27986 is a high-severity vulnerability in Gnu Emacs, classified under Code Injection. CVSS score: 7.8/10. Published 2023-03-09.
How severe is CVE-2023-27986?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-27986 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.