CVE-2003-0039: ISC dhcrelay (dhcp-relay) 3.0rc9 and earlier, and possibly other versions, allows remote attackers to cause a denial of service (packet…
Noroxi assessment
Priority: Monitor (action score 22/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 7.9% (FIRST EPSS); higher than 94.8% of all records.
- No special conditions are required; it is repeatable.
- Fixed version: dhcp3 (Debian:3.0) 3.0+3.0.1rc9-2.2.
Low priority for now. Upgrade to dhcp3 (Debian:3.0) 3.0+3.0.1rc9-2.2 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
ISC dhcrelay (dhcp-relay) 3.0rc9 and earlier, and possibly other versions, allows remote attackers to cause a denial of service (packet storm) via a certain BOOTP packet that is forwarded to a broadcast MAC address, causing an infinite loop that is not restricted by a hop count.
- Published
- Feb 7, 2003
- Updated
- Jun 16, 2026
- EPSS
- 7.9% · 94th percentile
- CWE
- —
Report tools
Action score
22
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 7.9%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| isc | dhcpd | cpe:2.3:a:isc:dhcpd |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- isc dhcpd3.0.1
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:3.0 | dhcp3 | before 3.0+3.0.1rc9-2.2 | 3.0+3.0.1rc9-2.2 |
Same product
isc: all recordsOther highest-scoring records for the same primary product.
- CVE-2004-0460Buffer overflow in the logging capability for the DHCP daemon (DHCPD) for ISC DHCP 3.0.1rc12 and 3.0.1rc13 allows remote attackers to cause…54Plan
- CVE-2002-0702Format string vulnerabilities in the logging routines for dynamic DNS code (print.c) of ISC DHCP daemon (DHCPD) 3 to 3.0.1rc8, with the…49Plan
- CVE-2004-0461The DHCP daemon (DHCPD) for ISC DHCP 3.0.1rc12 and 3.0.1rc13, when compiled in environments that do not provide the vsnprintf function…45Plan
Published before and after this one in the same product
- ← EarlierCVE-2003-0026Jan 17, 2003 · Multiple stack-based buffer overflows in the error handling routines of the minires library, as used in the NSUPDATE capability for ISC…36Monitor
- Later →CVE-2004-1006Mar 1, 2005 · Format string vulnerability in the log functions in dhcpd for dhcp 2.x allows remote DNS servers to execute arbitrary code via certain DNS…42Plan
- Later →CVE-2006-3122Aug 9, 2006 · The supersede_lease function in memory.c in ISC DHCP (dhcpd) server 2.0pl5 allows remote attackers to cause a denial of service…21Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:dhcp3 | 3.0+3.0.1rc9-2.2 · Debian:3.0 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
—
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (8 more)Show less
- distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000616
- marc.info/?l=bugtraq&m=104310927813830&w=2
- www.debian.org/security/2003/dsa-245
- www.kb.cert.org/vuls/id/149953
- www.openpkg.org/security/OpenPKG-SA-2003.012-dhcpd.html
- www.redhat.com/support/errata/RHSA-2003-034.html
- www.securityfocus.com/bid/6628
- exchange.xforce.ibmcloud.com/vulnerabilities/11187
Vendor advisories and official records. Exploit/PoC links are deliberately left out.