Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-29323

23
FAUCET Score

CVE-2023-29323 describes a vulnerability in OpenBSD's smtpd and OpenSMTPD Portable, where a local, scoped IPv6 connection can cause the service to abort. This issue affects OpenBSD versions before 7.1 errata 024 and 7.2 before errata 020, as well as OpenSMTPD Portable before commit f748277. The vulnerability carries a CVSS score of 7.8 (High), indicating a high impact on confidentiality, integrity, and availability, with a low attack complexity and requiring local privileges. There is currently no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.0.0CPE matchmatch criteria
cpe:2.3:a:opensmtpd:opensmtpd:*:*:*:*:*:*:*:*
7.1CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:7.1:*:*:*:*:*:*:*
7.2CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:7.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
20.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 56th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

lists.fedoraproject.org / archives/list/[email protected]/message/GZBNQBHCM6PIOUR6I5GEQS35XYT2NX6T
cvsweb.openbsd.org / cgi-bin/cvsweb/src/usr.sbin/smtpd/envelope.c.diff
Product
cvsweb.openbsd.org / cgi-bin/cvsweb/src/usr.sbin/smtpd/envelope.c.diff
Product
cvsweb.openbsd.org / cgi-bin/cvsweb/src/usr.sbin/smtpd/envelope.c.diff
Product
ftp.openbsd.org / pub/OpenBSD/patches/7.1/common/024_smtpd.patch.sig
Patch
ftp.openbsd.org / pub/OpenBSD/patches/7.2/common/020_smtpd.patch.sig
Patch
github.com / openbsd/src/commit/f748277ed1fc7065ae8998d61ed78b9ab1e55fae
Patch
github.com / OpenSMTPD/OpenSMTPD/commit/41d0eae481f538956b1f1fbadfb535043454061f
Patch
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/GZBNQBHCM6PIOUR6I5GEQS35XYT2NX6T
security.netapp.com / advisory/ntap-20230526-0006