CVE-2026-129123

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Source
https://cve.org/CVERecord?id=CVE-2026-129123
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-129123.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-129123
Aliases
Published
2026-11-13T16:23:43Z
Modified
2026-11-14T02:56:11Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
C-Kermit 8.0.200 before 11.1.515 FTP Client Buffer Overflow via PBSZ and ADAT Replies
Details

C-Kermit 8.0.200 before 11.1.515 contains a buffer overflow vulnerability in getreply() in ckcftp.c that allows malicious FTP servers to overwrite client memory by sending overlong security replies. Attackers controlling or intercepting an FTP server can send long PBSZ replies after AUTH TLS, or long ADAT replies in GSSAPI, Kerberos 4, and SRP builds, overflowing the static reply_buf with attacker-controlled bytes.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-120"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/129xxx/CVE-2026-129123.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "8.0.200"
                        },
                        {
                            "fixed": "11.1.515"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        },
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "8.0.200"
                        },
                        {
                            "fixed": "11.1.515"
                        }
                    ],
                    "source": "DESCRIPTION"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/openkermit/ckermit

Affected ranges

Type
GIT
Repo
https://github.com/openkermit/ckermit
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
39ab009a365b97632e9975e1266fa618c4bdc59f
Fixed
bec28a4d544031fa07a07aacba3df5dd1202ef69
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "fixed": "39ab009a365b97632e9975e1266fa618c4bdc59f"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "bec28a4d544031fa07a07aacba3df5dd1202ef69"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

v11.*
v11.0
v11.0.502
v11.0.503
v11.0.504
v11.0.505
v11.0.506
v11.0.507
v11.0.508
v11.0.509
v11.0.510
v11.0.511
v11.0.512
v11.0.513
v11.0.514

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-129123.json"