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CVE-2023-46849

25
FAUCET Score

CVE-2023-46849 is a denial-of-service vulnerability affecting OpenVPN versions 2.6.0 to 2.6.6, as well as Debian and Fedora Project distributions. An unauthenticated attacker can trigger a divide-by-zero error by using the --fragment option in specific configurations, causing the application to crash. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to a complete loss of availability. There is currently no evidence of active exploitation, nor are there publicly available exploit tools like Metasploit or ExploitDB modules. Community discussion is minimal, with only one mention noted.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.6.0, <= 2.6.6CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:*
>= 2.11.0, <= 2.11.3CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*
2.12.0CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn_access_server:2.12.0:*:*:*:*:*:*:*
2.12.1CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn_access_server:2.12.1:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.15%
Probability of exploitation in next 30 days
EPSS Percentile
63.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0115 is in the 42nd percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (1)

oroincpatch availablevia llm_extracted
Fixed in: 2.12.2
View patch

Vendor Advisories (1)

oroincllm-oroinc-0cf7dbaaf29db6b5HIGH

Division by Zero and Use-After-Free Vulnerabilities in OpenVPN Access Server

Nov 9, 2023

References

community.openvpn.net / openvpn/wiki/CVE-2023-46849
Vendor Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE
Mailing List
lists.fedoraproject.org / archives/list/[email protected]/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4
openvpn.net / security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850
Vendor Advisory
debian.org / security/2023/dsa-5555
Third Party Advisory