CVE-2010-2156

MEDIUMCVSS v2 · 5.05.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:N/I:N/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 76.4% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
5.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 76%
  • Public exploit code is available (Metasploit, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 76%CVSS v2: 5.0Exploit: Metasploit · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

ISC DHCP 4.1 before 4.1.1-P1 and 4.0 before 4.0.2-P1 allows remote attackers to cause a denial of service (server exit) via a zero-length client ID.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0(low)
EG Risk
58(Track)
EG Risk 58/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity50% × 45%
Exploitation76% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
76%
EPSS %ILE
99%
KEV
Not listed

Published

June 7, 2010

Last Modified

April 29, 2026

References (18)

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
isc-dhcp—4.1.1-P1-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
isc-dhcp—4.1.1-P1-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
isc-dhcp—4.1.1-P1-1—

Data Freshness Timeline

(refreshed 3× in last 7d / 9× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-26 14:40 UTCEPSS rescore
  2. 2026-08-25 13:43 UTCEPSS rescore
  3. 2026-08-24 20:03 UTCOSV refresh
  4. 2026-08-19 16:58 UTCEPSS rescore
  5. 2026-08-16 02:09 UTCEPSS rescore
  6. 2026-08-15 01:25 UTCEPSS rescore
  7. 2026-08-08 13:25 UTCOSV refresh
  8. 2026-08-07 16:21 UTCEPSS rescore
  9. 2026-08-06 13:41 UTCEPSS rescore
  10. 2026-07-26 13:41 UTCEG score recompute▲ 5.00
  11. 2026-07-23 06:19 UTCOSV refresh
  12. 2026-07-23 01:01 UTCEG score recompute
  13. 2026-07-23 00:38 UTCEG score recompute▼ 7.60
  14. 2026-07-23 00:06 UTCEG score recompute▲ 7.60
  15. 2026-07-22 21:45 UTCEG score recompute▼ 9.00
  16. 2026-07-22 14:03 UTCEPSS rescore
  17. 2026-07-22 14:03 UTCEPSS rescore
  18. 2026-07-20 17:03 UTCEPSS rescore
  19. 2026-07-15 16:54 UTCEPSS rescore
  20. 2026-07-15 16:54 UTCEPSS rescore
  21. 2026-07-11 08:22 UTCEPSS rescore
  22. 2026-07-06 01:29 UTCOSV refresh
  23. 2026-07-05 02:26 UTCEPSS rescore
  24. 2026-07-01 15:02 UTCEPSS rescore
  25. 2026-06-30 23:19 UTCEPSS rescore
Show 50 more
  1. 2026-06-29 14:02 UTCEPSS rescore
  2. 2026-06-29 14:02 UTCEPSS rescore
  3. 2026-06-28 04:52 UTCEPSS rescore
  4. 2026-06-28 04:52 UTCEPSS rescore
  5. 2026-06-25 13:46 UTCEPSS rescore
  6. 2026-06-23 21:30 UTCEPSS rescore
  7. 2026-06-23 21:29 UTCEPSS rescore
  8. 2026-06-22 14:22 UTCEPSS rescore
  9. 2026-06-22 14:22 UTCEPSS rescore
  10. 2026-06-21 14:53 UTCEPSS rescore
  11. 2026-06-21 01:56 UTCEPSS rescore
  12. 2026-06-21 01:56 UTCEPSS rescore
  13. 2026-06-18 17:49 UTCEPSS rescore
  14. 2026-06-18 17:49 UTCEPSS rescore
  15. 2026-06-17 17:49 UTCEPSS rescore
  16. 2026-06-17 17:49 UTCEPSS rescore
  17. 2026-06-17 12:35 UTCOSV refresh
  18. 2026-06-15 17:44 UTCEPSS rescore
  19. 2026-06-13 22:57 UTCEPSS rescore
  20. 2026-06-13 22:57 UTCEPSS rescore
  21. 2026-06-13 22:57 UTCEPSS rescore
  22. 2026-06-12 23:08 UTCEPSS rescore
  23. 2026-06-12 23:08 UTCEPSS rescore
  24. 2026-06-11 13:56 UTCEPSS rescore
  25. 2026-06-10 22:14 UTCEPSS rescore
  26. 2026-06-05 22:44 UTCEPSS rescore
  27. 2026-06-05 22:44 UTCEPSS rescore
  28. 2026-06-04 13:09 UTCEPSS rescore
  29. 2026-06-04 13:09 UTCEPSS rescore
  30. 2026-06-02 20:10 UTCEPSS rescore
  31. 2026-06-02 20:10 UTCEPSS rescore
  32. 2026-06-01 13:49 UTCEPSS rescore
  33. 2026-06-01 13:49 UTCEPSS rescore
  34. 2026-05-31 22:28 UTCEPSS rescore
  35. 2026-05-31 22:28 UTCEPSS rescore
  36. 2026-05-29 13:40 UTCEPSS rescore
  37. 2026-05-29 11:24 UTCEG score recompute
  38. 2026-05-29 11:24 UTCGHSA enrichment
  39. 2026-05-28 13:42 UTCEPSS rescore
  40. 2026-05-28 13:42 UTCEPSS rescore
  41. 2026-05-27 17:35 UTCOSV refresh
  42. 2026-05-27 13:38 UTCEPSS rescore
  43. 2026-05-27 13:38 UTCEPSS rescore
  44. 2026-05-26 07:16 UTCEPSS rescore
  45. 2026-05-26 07:16 UTCEPSS rescore
  46. 2026-05-22 21:15 UTCEPSS rescore
  47. 2026-05-22 21:15 UTCEPSS rescore
  48. 2026-05-22 21:15 UTCEPSS rescore
  49. 2026-05-18 21:29 UTCEPSS rescore
  50. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-14185
    First seen Jul 3, 2010

    ISC DHCPD - Denial of Service

    Open source ↗
  • Metasploitauxiliary/dos/dhcp/isc_dhcpd_clientid✓ verified
    First seen Jan 1, 2010

    ISC DHCP Zero Length ClientID Denial of Service Module

    Open source ↗

Frequently asked(4)

What is CVE-2010-2156?
CVE-2010-2156 is a medium vulnerability published on June 7, 2010. ISC DHCP 4.1 before 4.1.1-P1 and 4.0 before 4.0.2-P1 allows remote attackers to cause a denial of service (server exit) via a zero-length client ID.
When was CVE-2010-2156 disclosed?
CVE-2010-2156 was first published in the National Vulnerability Database on June 7, 2010, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2010-2156 actively exploited?
CVE-2010-2156 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76% probability of exploitation in the next 30 days, which ranks it in the top 0.5% of all scored CVEs.
How do I remediate CVE-2010-2156?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2010-2156, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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