Security readout for executives and security teams
Plain-English summary
CVE-2025-29329 is a critical buffer overflow in the ippprint service on Sagemcom F@st 3686 firmware MAGYAR_4.121.0. The CVE states a remote attacker can execute arbitrary code with a crafted HTTP request. Treat exposed affected devices as urgent until vendor guidance confirms patching or mitigation.
Executive priority
Prioritize this as critical for any exposed affected device because the CVE describes unauthenticated remote code execution. The immediate business action is exposure reduction and vendor confirmation, not waiting for exploitation evidence.
Technical view
The issue is classified as CWE-120 buffer overflow in the Internet Printing Protocol service. CVSS 3.1 is 9.8 with network attack vector, low complexity, no privileges, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where Sagemcom F@st 3686 devices running MAGYAR_4.121.0 have the ippprint or related HTTP service reachable from untrusted networks. The CVE affected-product metadata is incomplete, so confirm exact model and firmware before scoping.
Exploitation context
The provided sources state remote code execution via a crafted HTTP request. The bundle does not show CISA KEV listing or confirmed active exploitation. A public GitHub reference exists, so defenders should assume technical details may be accessible.
Researcher notes
Evidence is strong on impact and CVSS but limited on affected metadata, patch status, and exploitation in the provided bundle. Avoid broad product assumptions beyond Sagemcom F@st 3686 MAGYAR_4.121.0 until additional vendor or CNA data is available.
Mitigation direction
- Check Sagemcom or service-provider guidance for firmware updates or workarounds.
- Remove untrusted network access to ippprint, IPP, or related HTTP services.
- Place affected devices behind firewall rules or management-only networks.
- Disable printing services if the device supports doing so safely.
- Replace or retire devices if no vendor fix is available.
Validation and detection
- Inventory Sagemcom F@st 3686 devices and firmware versions.
- Confirm whether MAGYAR_4.121.0 is present in production.
- Verify ippprint, IPP, or related HTTP services are not internet-exposed.
- Review gateway logs for suspicious requests to printing endpoints.
- Track the CVE record and vendor channels for updated affected-product data.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-120: 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.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-29329 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
SSVC decision data
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/SilverS3c/Sagemcom-fast-3686-ippprintCVE reference, mitre
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.