PatchTheCVECVE-2013-4743: Static HTTP Server 1.0 has a Local Overflow
CVE-2013-4743 is a critical-severity flaw (CVSS 9.8) affecting static http server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Static HTTP Server 1.0 has a Local Overflow
Why this priority
- Critical severity
- EPSS top 5%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 8.4% (top 5%) |
| CISA exploited list | No |
| Weakness | CWE-120 |
| Published | 2019-12-27 |
| Last modified | 2026-06-16 |
Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Exploit-DB: Static HTTP Server 1.0 - Local Overflow (SEH)
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2013-4743?
static http server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2013-4743 being exploited?
CVE-2013-4743 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2013-4743 affect?
CVE-2013-4743 affects static http server. Severity is critical (CVSS 9.8). Static HTTP Server 1.0 has a Local Overflow
How urgent is CVE-2013-4743?
Priority 68/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action