CVE-2025-5548
A vulnerability, which was classified as critical, was found in FreeFloat FTP Server 1.0. Affected is an unknown function of the component NOOP Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
- CVSS
- 7.3High
- Exploited in the wild
- Not knownPublic exploit code; not in CISA KEV
- EPSS
- 16.0%chance of exploitation in the next 30 daystop 4% of scored CVEsFIRST score of 11 Nov 2026
- Fix
- Not stated by the vendorno fixed release in the CVE record
- Published
- 4 Jun 2025analysed here 12 Nov 2026
Summary
Triage
- Attack surface
- Server-side
- Exploitable
- At runtime
- Attack vector
- network
- Can a WAF block it?
- No. See why
The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.
Affected products
| Product | Affected versions | Vendor says fixed in |
|---|---|---|
| FreeFloat FTP Server | 1.0Vendor says fixed in: not stated |
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
Products named in our analysis
- freefloat:freefloat_ftp_server
Fix and mitigation
WAF and other mitigations
Can a WAF block it? No. This is a memory-corruption bug. Generic WAF rules do not recognise the input that triggers it; only a rule written for this specific CVE can, and only if the triggering request has a recognisable shape.
Also consider: patch
Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Remediation steps (AI-written)
Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.
Exploitation evidence
- CISA KEV catalog
- Not listed as of our last sync.
- Public exploit code
- Yes: 1 on Exploit-DB · 37 GitHub proofs of concept
- CISA SSVC
- exploitation none, automatable yes, technical impact partialAssessed by CISA 4 Jun 2025 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.
Exploit-DB
- Freefloat FTP Server 1.0 - Remote Buffer Overflowremote, 13 Jun 2025
GitHub proofs of concept
- mk017-hk/CVE-2025-55482 stars
- TheMalwareGuardian/CVE-2025-55481 stars
- JSantos1990/CVE-2025-55480 stars
- alanschmidt81/CVE-2025-55480 stars
and 33 more repositories
Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.
Timeline
- 4 Jun 2025Published
- 4 Jun 2025CISA SSVC assessment: exploitation none1 day later
- 4 Jun 2025CVE record last updatedsame day later
- 13 Jun 2025First public exploit or proof of concept8 days later
- 12 Nov 2026Analysed by vulneraibility.com518 days (about 1 year) later
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
| Metric | Value | What it means |
|---|---|---|
| Attack vector | NetworkReachable over the internet or any routable network. | Reachable over the internet or any routable network. |
| Attack complexity | LowRepeatable attack, no special conditions. | Repeatable attack, no special conditions. |
| Privileges required | NoneThe attacker needs no prior access. | The attacker needs no prior access. |
| User interaction | NoneNo victim action needed. | No victim action needed. |
| Scope | UnchangedImpact stays within the vulnerable component. | Impact stays within the vulnerable component. |
| Confidentiality | LowPartial data disclosure. | Partial data disclosure. |
| Integrity | LowLimited modification possible. | Limited modification possible. |
| Availability | LowPartial degradation possible. | Partial degradation possible. |
Common questions
Is CVE-2025-5548 being exploited?
Not confirmed. CVE-2025-5548 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 16% probability of exploitation in the next 30 days.
How severe is CVE-2025-5548?
CVE-2025-5548 is rated High with a CVSS score of 7.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2025-5548?
Not known from our data. No patch reference has been recorded for CVE-2025-5548, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2025-5548 affect?
CVE-2025-5548 affects freefloat:freefloat_ftp_server. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
References
4 references in the CVE record, grouped by the tags the record gives them.
Advisories (1)
- vuldb.com /?submit.586982
Exploits (1)
- fitoxs.com /exploit/exploit-181bb9e57fbeedb99be8435f014d23b3d936df3ff95db127e57d6832dc48df8
Where the data on this page comes from
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Exploit-DB: published exploits
- PoC-in-GitHub: GitHub repositories that claim a proof of concept
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
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