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CVE-2023-40303

22
FAUCET Score

CVE-2023-40303 is a privilege escalation vulnerability in GNU inetutils before version 2.5, affecting components like ftpd, rcp, and rshd. It arises from unchecked return values of set*id() functions, which can lead to a process failing to drop privileges before handling user input. This vulnerability carries a high CVSS score of 7.8, indicating a local attack vector with low complexity, potentially leading to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, no public exploit code available, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4CPE matchmatch criteria
cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:*

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
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 71st percentile among its peer group of 17,061 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

Remediation records are not available for this CVE.

References

ftp.gnu.org / gnu/inetutils
Product
git.savannah.gnu.org / cgit/inetutils.git/commit
Patch
lists.debian.org / debian-lts-announce/2023/10/msg00013.html
lists.gnu.org / archive/html/bug-inetutils/2023-07/msg00000.html
ExploitMailing ListPatchVendor Advisory
openwall.com / lists/oss-security/2023/12/30/4