CVE-2023-51713: proftpd Out-of-bounds Read
Vulnerability summary
CVE-2023-51713 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in proftpd. EPSS estimates a 4.25% chance of exploitation in the next 30 days, higher than 91% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 22-12-2023PublishedVulnerability first disclosed.
- 03-11-2025Last modifiedVulnerability information updated.
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 metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
4.25%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
No change 0.00 pp
From 4.25% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundProftpd
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- proftpd-dfsg< 1.3.8+dfsg-4+deb12u3 | < 1.3.8.a+dfsg-1
Opensuse1 product
- proftpd&distro=openSUSE Tumbleweed< 1.3.8b-2.1
Proftpd1 product
- proftpd< 1.3.8a
Ubuntu1 product
- proftpd-dfsgAll versions (No fix recorded) | < 1.3.6c-2ubuntu0.1 | < 1.3.7c+dfsg-1ubuntu0.1
4 vendors · 4 products
References
11 links- github.com/proftpd/proftpd/blob/1.3.8/NEWSRelease Notes
