How severe is CVE-2008-2399?

CVE-2008-2399 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-2399 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-2399?

CVE-2008-2399 affects Fireftp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-2399?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-2399 published?

CVE-2008-2399 was published on 2008-05-22 and last updated on 2026-06-16.

CVE-2008-2399

CVE-2008-2399 is a critical-severity vulnerability in Fireftp with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Fireftp
Published: 2008-05-22
Last modified: 2026-06-16

Description

Directory traversal vulnerability in the FireFTP add-on before 0.98.20080518 for Firefox allows remote FTP servers to create or overwrite arbitrary files via ..\ (dot dot backslash) sequences in responses to (1) MLSD and (2) LIST commands, a related issue to CVE-2002-1345. NOTE: this can be leveraged for code execution by writing to a Startup folder.

Frequently asked questions

What is CVE-2008-2399?: Directory traversal vulnerability in the FireFTP add-on before 0.98.20080518 for Firefox allows remote FTP servers to create or overwrite arbitrary files via ..\ (dot dot backslash) sequences in responses to (1) MLSD and (2) LIST commands, a related issue to CVE-2002-1345. NOTE: this can be leveraged for code execution by writing to a Startup folder.
How severe is CVE-2008-2399?: CVE-2008-2399 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2008-2399 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-2399?: CVE-2008-2399 affects Fireftp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-2399?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-2399 published?: CVE-2008-2399 was published on 2008-05-22 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:fireftp:fireftp:*:*:*:*:*:*:*:*

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…

Browse all CWE-22 (Path Traversal) vulnerabilities →