CVE-2015-0235

HIGHCVSS v2 · 10.010.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — v2 rates that HIGH (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:C/I:C/A:C. 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 94.6% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Triggered by: NVD CVSS v2.0 (legacy fallback)
Sources: epss, nvd_v2
Weaponized
10.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 95%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 95%CVSS v2: 10.0Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is available — apply it.

Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and other 2.x versions before 2.18, allows context-dependent attackers to execute arbitrary code via vectors related to the (1) gethostbyname or (2) gethostbyname2 function, aka "GHOST."

CVSS v2.0 (legacy)
10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
10.0HIGHlow confidence
EG Risk
87
EG Risk 87/100CISA SSVC

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
Severity100% × 45%
Exploitation95% × 40%
Automatability30% × 15%
CISA SSVC: Track at low, Track or Track* at medium and Track* or Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
95%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low, Track or Track* at medium and Track* or Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact unknown (not published for this CVE). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

January 28, 2015

Last Modified

May 6, 2026

References (180)

Vendor Advisories for CVE-2015-0235(6)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(6)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibc6 (2.15-0ubuntu10.10) @ precise2026-07-26ubuntu
redhatrhev-hypervisor6-0:6.6-20150123.1.el6ev2015-02-04redhat
redhatglibc-0:2.12-1.132.el6_5.52015-01-28redhat
redhatglibc-0:2.3.4-2.57.el4.22015-01-28redhat
redhatglibc-0:2.17-55.el7_0.52015-01-27redhat
redhatglibc-0:2.5-123.el5_11.12015-01-27redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
glibc—
  • every version up to 2.18-1: fixed in 2.18-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
glibc—
  • every version up to 2.18-1: fixed in 2.18-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
glibc—
  • every version up to 2.18-1: fixed in 2.18-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
glibc—
  • every version up to 2.18-1: fixed in 2.18-1
—
Debian:6.0(1)
PackageVulnerable rangeFix by version rangeDependents
eglibc2.11.2-10 ... 2.11.3-4 (10 versions)
  • every version up to 2.11.3-4+deb6u4: fixed in 2.11.3-4+deb6u4
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
eglibc2.13-38 ... 2.13-38+deb7u6 (7 versions)
  • every version up to 2.13-38+deb7u7: fixed in 2.13-38+deb7u7
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 3× in last 7d / 7× 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.

Showing the most recent 100 of 4,381 total refreshes for this CVE.

  1. 2026-10-09 20:01 UTCEPSS rescore
  2. 2026-10-06 15:11 UTCEPSS rescore
  3. 2026-10-05 04:13 UTCOSV refresh
  4. 2026-09-30 09:00 UTCEG score recompute
  5. 2026-09-18 19:22 UTCEPSS rescore
  6. 2026-09-15 12:24 UTCOSV refresh
  7. 2026-09-10 09:26 UTCEPSS rescore
  8. 2026-09-06 13:42 UTCEPSS rescore
  9. 2026-09-05 15:23 UTCEPSS rescore
  10. 2026-08-30 19:12 UTCEPSS rescore
  11. 2026-08-27 11:34 UTCOSV refresh
  12. 2026-08-16 02:09 UTCEPSS rescore
  13. 2026-08-12 13:46 UTCEPSS rescore
  14. 2026-08-11 01:01 UTCOSV refresh
  15. 2026-08-06 13:42 UTCEPSS rescore
  16. 2026-08-05 19:12 UTCEPSS rescore
  17. 2026-08-02 02:22 UTCEPSS rescore
  18. 2026-07-26 14:50 UTCEPSS rescore
  19. 2026-07-26 13:52 UTCEG score recompute▲ 10.00
  20. 2026-07-26 01:32 UTCVendor advisory
  21. 2026-07-26 01:32 UTCGHSA enrichment
  22. 2026-07-26 01:31 UTCVendor advisory
  23. 2026-07-26 01:31 UTCGHSA enrichment
  24. 2026-07-26 01:30 UTCVendor advisory
  25. 2026-07-26 01:30 UTCGHSA enrichment
Show 75 more
  1. 2026-07-26 01:29 UTCVendor advisory
  2. 2026-07-26 01:29 UTCGHSA enrichment
  3. 2026-07-26 01:28 UTCVendor advisory
  4. 2026-07-26 01:28 UTCGHSA enrichment
  5. 2026-07-26 01:27 UTCVendor advisory
  6. 2026-07-26 01:27 UTCGHSA enrichment
  7. 2026-07-26 01:27 UTCVendor advisory
  8. 2026-07-26 01:26 UTCGHSA enrichment
  9. 2026-07-26 01:25 UTCVendor advisory
  10. 2026-07-26 01:25 UTCGHSA enrichment
  11. 2026-07-26 01:24 UTCVendor advisory
  12. 2026-07-26 01:24 UTCGHSA enrichment
  13. 2026-07-26 01:23 UTCVendor advisory
  14. 2026-07-26 01:23 UTCGHSA enrichment
  15. 2026-07-26 01:22 UTCVendor advisory
  16. 2026-07-26 01:22 UTCGHSA enrichment
  17. 2026-07-26 01:21 UTCVendor advisory
  18. 2026-07-26 01:21 UTCGHSA enrichment
  19. 2026-07-26 01:20 UTCVendor advisory
  20. 2026-07-26 01:20 UTCGHSA enrichment
  21. 2026-07-26 01:20 UTCVendor advisory
  22. 2026-07-26 01:19 UTCGHSA enrichment
  23. 2026-07-26 01:19 UTCVendor advisory
  24. 2026-07-26 01:18 UTCGHSA enrichment
  25. 2026-07-26 01:17 UTCVendor advisory
  26. 2026-07-26 01:17 UTCGHSA enrichment
  27. 2026-07-26 01:16 UTCVendor advisory
  28. 2026-07-26 01:16 UTCGHSA enrichment
  29. 2026-07-26 01:15 UTCVendor advisory
  30. 2026-07-26 01:15 UTCGHSA enrichment
  31. 2026-07-26 01:15 UTCVendor advisory
  32. 2026-07-26 01:14 UTCGHSA enrichment
  33. 2026-07-26 01:13 UTCVendor advisory
  34. 2026-07-26 01:13 UTCGHSA enrichment
  35. 2026-07-26 01:12 UTCVendor advisory
  36. 2026-07-26 01:12 UTCGHSA enrichment
  37. 2026-07-26 01:11 UTCVendor advisory
  38. 2026-07-26 01:11 UTCGHSA enrichment
  39. 2026-07-26 01:10 UTCVendor advisory
  40. 2026-07-26 01:10 UTCGHSA enrichment
  41. 2026-07-26 01:09 UTCVendor advisory
  42. 2026-07-26 01:09 UTCGHSA enrichment
  43. 2026-07-26 01:08 UTCVendor advisory
  44. 2026-07-26 01:08 UTCGHSA enrichment
  45. 2026-07-26 01:07 UTCVendor advisory
  46. 2026-07-26 01:07 UTCGHSA enrichment
  47. 2026-07-26 01:06 UTCVendor advisory
  48. 2026-07-26 01:06 UTCGHSA enrichment
  49. 2026-07-26 01:05 UTCVendor advisory
  50. 2026-07-26 01:05 UTCGHSA enrichment
  51. 2026-07-26 01:05 UTCVendor advisory
  52. 2026-07-26 01:04 UTCGHSA enrichment
  53. 2026-07-26 01:04 UTCVendor advisory
  54. 2026-07-26 01:04 UTCGHSA enrichment
  55. 2026-07-26 01:03 UTCVendor advisory
  56. 2026-07-26 01:02 UTCGHSA enrichment
  57. 2026-07-26 01:01 UTCVendor advisory
  58. 2026-07-26 01:01 UTCGHSA enrichment
  59. 2026-07-26 01:00 UTCVendor advisory
  60. 2026-07-26 01:00 UTCGHSA enrichment
  61. 2026-07-26 00:58 UTCVendor advisory
  62. 2026-07-26 00:58 UTCGHSA enrichment
  63. 2026-07-26 00:57 UTCVendor advisory
  64. 2026-07-26 00:57 UTCGHSA enrichment
  65. 2026-07-26 00:56 UTCVendor advisory
  66. 2026-07-26 00:56 UTCGHSA enrichment
  67. 2026-07-26 00:55 UTCVendor advisory
  68. 2026-07-26 00:55 UTCGHSA enrichment
  69. 2026-07-26 00:54 UTCVendor advisory
  70. 2026-07-26 00:54 UTCGHSA enrichment
  71. 2026-07-26 00:53 UTCVendor advisory
  72. 2026-07-26 00:53 UTCGHSA enrichment
  73. 2026-07-26 00:52 UTCVendor advisory
  74. 2026-07-26 00:52 UTCGHSA enrichment
  75. 2026-07-26 00:51 UTCVendor advisory

Publicly available exploits

(9 references)

Working exploit code is in the public domain (2 Metasploit modules) (5 GitHub PoCs) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-36421✓ verified
    First seen Mar 18, 2015

    Exim - 'GHOST' glibc gethostbyname Buffer Overflow (Metasploit)

    Open source ↗
  • Metasploitexploit/linux/smtp/exim_gethostbyname_bof✓ verified
    First seen Jan 27, 2015

    Exim GHOST (glibc gethostbyname) Buffer Overflow

    Open source ↗
  • Metasploitauxiliary/scanner/http/wordpress_ghost_scanner✓ verified
    First seen Jan 1, 2015

    WordPress XMLRPC GHOST Vulnerability Scanner

    Open source ↗
  • GitHub PoCarm13/ghost_exploit
    First seen Mar 28, 2015

    CVE-2015-0235 EXIM ESTMP GHOST Glibc Gethostbyname() DoS Exploit/PoC

    Open source ↗
  • GitHub PoCmakelinux/CVE-2015-0235-workaround
    First seen Feb 2, 2015

    A shared library wrapper with additional checks for vulnerable functions gethostbyname2_r gethostbyname_r (GHOST vulnerability)

    Open source ↗
  • Exploit-DBEDB-35951
    First seen Jan 29, 2015

    Exim ESMTP 4.80 - glibc gethostbyname Denial of Service

    Open source ↗
  • GitHub PoCaaronfay/CVE-2015-0235-test
    First seen Jan 27, 2015

    Ansible playbook to check vulnerability for CVE-2015-0235

    Open source ↗
  • GitHub PoCfser/ghost-checker
    First seen Jan 27, 2015

    Test wether you're exposed to ghost (CVE-2015-0235). All kudos go to Qualys Security

    Open source ↗
  • GitHub PoCmikesplain/CVE-2015-0235-cookbook
    First seen Jan 27, 2015

    A chef cookbook to test the GHOST vulnerability

    Open source ↗

Related CVEs(same product + same vendor + same CWE)

Frequently asked(4)

What is CVE-2015-0235?
CVE-2015-0235 is a high vulnerability published on January 28, 2015. Heap-based buffer overflow in the nsshostnamedigits_dots function in glibc 2.2, and other 2.x versions before 2.18, allows context-dependent attackers to execute arbitrary code via vectors related to the (1) gethostbyname or (2) gethostbyname2 function, aka "GHOST."
When was CVE-2015-0235 disclosed?
CVE-2015-0235 was first published on January 28, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-0235 actively exploited?
CVE-2015-0235 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 95% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
How do I remediate CVE-2015-0235?
A fix for CVE-2015-0235 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2015-0235 are linked in the Vendor Advisories panel on this page.

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