Secuno
ENNL
Book demo

CVE-2023-51713

Proftpd out-of-bounds read

7.5 HIGHPublic exploitEPSS 4.25%
  1. Published22 Dec 2023

Description

make_ftp_cmd in main.c in ProFTPD before 1.3.8a has a one-byte out-of-bounds read, and daemon crash, because of mishandling of quote/backslash semantics.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Proftpd< 1.3.8a

Remediation

Fixed in
Proftpd≥ 1.3.8a

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-1078378.2
RIOT is an open-source microcontroller operating system designed for Internet of Things…
CVE-2026-78269.1
A heap-based out-of-bounds read in the BufferSerializerIOv2_ReadBuffer function…
CVE-2026-823348.1
IBM Guardium Data Protection 12.0, 12.1, 12.2 is vulnerable to a heap-based…
CVE-2026-144968.2
IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0…
CVE-2026-764578.6
As part of Cisco's ongoing commitment to proactive security and product quality, the…
CVE-2026-772148.2
libexpat before commit 13c5f63 contains a heap buffer over-read vulnerability in…

Frequently asked

Is CVE-2023-51713 being actively exploited?

CVE-2023-51713 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 4.25%.

How severe is CVE-2023-51713?

CVE-2023-51713 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 4.25% probability of exploitation.

Which products are affected by CVE-2023-51713?

Affected products include Proftpd.

How do I fix CVE-2023-51713?

Upgrade affected software to a fixed version, for example Proftpd 1.3.8a or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-51713 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.