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CVE Record

CVE-2025-14242: Vsftpd: vsftpd: denial of service via integer overflow in ls command parameter parsing

A flaw was found in vsftpd. This vulnerability allows a denial of service (DoS) via an integer overflow in the ls command parameter parsing, triggered by a remote, authenticated attacker sending a crafted STAT command with a specific byte sequence.

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2025-14242 can let a logged-in FTP user crash or disrupt vsftpd by sending a specially crafted command. The impact is service availability, not data theft or system takeover, based on the provided sources. Treat it as a business continuity issue for systems that still rely on FTP services.

Executive priority

Schedule remediation in the normal vulnerability cycle, with faster action for public or critical FTP services. This is not described as exploited or as a data breach risk, but it can interrupt file-transfer operations if vulnerable authenticated access exists.

Technical view

vsftpd has an integer overflow in ls command parameter parsing. A remote authenticated attacker can trigger denial of service using a crafted STAT command with a specific byte sequence. Red Hat rates it Medium with CVSS 3.1 score 6.5, reflecting network access, low complexity, low privileges, and high availability impact.

Likely exposure

Exposure is most likely on Red Hat Enterprise Linux 8, 9, 10, and listed EUS/AUS/TUS/E4S variants running the affected vsftpd package. RHEL 6 and 7 status is listed as unknown. Systems without vsftpd installed or without authenticated FTP access are less exposed.

Exploitation context

The source bundle does not indicate active exploitation, and KEV is false. Exploitation requires remote network access and valid FTP authentication. The result described is denial of service against vsftpd availability, not confidentiality or integrity compromise.

Researcher notes

Evidence is strongest for Red Hat-packaged vsftpd in the listed RHEL streams. The provided data names affected package builds but does not include standalone upstream impact or fixed version details beyond Red Hat advisories. Avoid assuming exploit availability or impact outside denial of service.

Mitigation direction

  • Apply the relevant Red Hat security advisory updates for your RHEL stream.
  • Prioritize internet-facing or business-critical FTP servers.
  • Restrict FTP access to trusted users and networks where operationally possible.
  • Disable vsftpd where FTP service is no longer required.
  • Check Red Hat guidance for RHEL 6 and 7 applicability before deciding risk.

Validation and detection

  • Inventory systems with the vsftpd package installed.
  • Identify the RHEL major version and lifecycle stream for each host.
  • Compare installed vsftpd builds against Red Hat CVE and errata guidance.
  • Confirm whether vsftpd is enabled and reachable over the network.
  • Verify authenticated FTP access is limited to expected users.
Prepared
Confidence
high
Sources
12

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-190: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2025-14242 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
5Timeline events
1ADP providers
15Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H2.83.6redhat

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2025-14242Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Reported to Red Hat.

  2. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. Source timelineredhat

    Made public.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat Enterprise Linux 10vsftpd, 0:3.0.5-10.el10_1.1affected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Supportvsftpd, 0:3.0.5-9.el10_0.1affected
Red HatRed Hat Enterprise Linux 8vsftpd, 0:3.0.3-36.el8_10.3affected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Supportvsftpd, 0:3.0.3-31.el8_2.1affected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportvsftpd, 0:3.0.3-33.el8_4.1affected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onvsftpd, 0:3.0.3-33.el8_4.1affected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportvsftpd, 0:3.0.3-35.el8_6.1affected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Servicevsftpd, 0:3.0.3-35.el8_6.1affected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutionsvsftpd, 0:3.0.3-35.el8_6.1affected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Servicevsftpd, 0:3.0.3-35.el8_8.1affected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutionsvsftpd, 0:3.0.3-35.el8_8.1affected
Red HatRed Hat Enterprise Linux 9vsftpd, 0:3.0.5-6.el9_7.2affected
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutionsvsftpd, 0:3.0.3-49.el9_0.1affected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutionsvsftpd, 0:3.0.5-4.el9_2.1affected
Red HatRed Hat Enterprise Linux 9.4 Extended Update Supportvsftpd, 0:3.0.5-5.el9_4.1affected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Supportvsftpd, 0:3.0.5-6.el9_6.1affected
Red HatRed Hat Enterprise Linux 6vsftpdunknown
Red HatRed Hat Enterprise Linux 7vsftpdunknown
Weakness

CWE details

CWE-190

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-190 · source CWE mapping

Integer Overflow or Wraparound

Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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