Security readout for executives and security teams
Plain-English summary
This CVE describes a remote crash risk in the ftpd service on specific legacy FreeBSD and OpenBSD releases. A null pointer dereference may let a remote user cause denial of service for FTP, interrupting file-transfer availability rather than directly exposing data.
Executive priority
Treat this as a service-availability issue for legacy FTP infrastructure. Priority is highest where affected ftpd instances are internet-facing or support business-critical transfers. The main decision is whether to retire, isolate, or update those systems.
Technical view
CVE-2010-4816 is a CWE-476 null pointer dereference in ftpd/popen.c affecting FreeBSD 8.0, 6.3, 4.9 and OpenBSD 4.6. The reported impact is remote denial of service of the ftpd service. The provided bundle has no CVSS score and no patch details.
Likely exposure
Exposure is likely limited to legacy FreeBSD or OpenBSD systems running the affected ftpd service, especially where FTP is reachable from untrusted networks. Modern systems or hosts without ftpd enabled are not shown as affected by the supplied sources.
Exploitation context
The sources support remote denial of service, but the bundle does not show CISA KEV listing or confirmed active exploitation. Public discussion references exist, but exploitation status and reliability are not established here.
Researcher notes
Evidence is narrow: affected versions, component, CWE, and impact are identified, but severity scoring and remediation detail are missing from the supplied bundle. Avoid assuming broader BSD impact beyond the named FreeBSD and OpenBSD releases.
Mitigation direction
- Identify affected FreeBSD and OpenBSD hosts running ftpd.
- Restrict FTP access to trusted networks where business use remains required.
- Disable ftpd on systems that do not need FTP service.
- Check FreeBSD and OpenBSD vendor guidance for fixed versions or supported migration paths.
- Prioritize replacing unsupported operating system versions.
Validation and detection
- Confirm OS version against the affected versions in the CVE record.
- Verify whether ftpd is enabled and reachable on each host.
- Review service monitoring for unexplained ftpd crashes or restarts.
- Check vendor references for exact remediation status before closing findings.
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-476: 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 lookupCVE-2010-4816 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=144761CVE reference · x_refsource_MISC
- https://seclists.org/fulldisclosure/2010/Mar/117CVE reference · x_refsource_MISC
- https://seclists.org/oss-sec/2011/q3/284CVE reference · x_refsource_MISC
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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.