The kadm5_modify_policy_internal function in lib/kadm5/srv/svr_policy.c in the Kerberos administration daemon (kadmind) in MIT Kerberos 5 (krb5) 1.5 through 1.6.2 does not properly check return values when the policy does not exist, which might allow remote authenticated users with the "modify policy" privilege to execute arbitrary code via unspecified vectors that trigger a write to an uninitialized pointer.
CVE-2007-4000
“—” beside the score: it is equal to NVD's CVSS v2 base score.
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 8.5 — NVD rates that HIGH (NVD's v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; no CRITICAL band). Vector AV:N/AC:M/Au:S/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 6.1% exploitation probability in the next 30 days; it does not lift the v2 base. EPSS sets EG Risk's exploitation input. Confidence: LOW.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v2.0 (legacy)
- 8.5HIGHNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 8.5HIGHlow confidence
- EG Risk
- 41EG Risk 41/100
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 (value × EchelonGraph’s weight)Severity85% × 45%The EG Score, 8.5 of 10.Exploitation6.1% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 6.1%
- EPSS %ILE
- 93rd
- KEV
- Not listed
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
September 5, 2007
Last Modified
April 23, 2026
References (22)
- MITRE · CVE Programhttp://secunia.com/advisories/26676 (archived copy: the site no longer serves it)Broken Link
- MITRE · CVE Programhttp://secunia.com/advisories/26680 (archived copy: the site no longer serves it)Broken Link
- MITRE · CVE Programhttp://secunia.com/advisories/26700 (archived copy: the site no longer serves it)Broken Link
- MITRE · CVE Programhttp://secunia.com/advisories/26728 (archived copy: the site no longer serves it)Broken Link
- MITRE · CVE Programhttp://secunia.com/advisories/26783 (archived copy: the site no longer serves it)Broken Link
- MITRE · CVE Programhttp://secunia.com/advisories/26987 (archived copy: the site no longer serves it)Broken Link
- MITRE · CVE Programhttp://securityreason.com/securityalert/3092Broken Link
- MITRE · CVE Programhttp://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2007-006.txtVendor Advisory
- MITRE · CVE Programhttp://www.gentoo.org/security/en/glsa/glsa-200709-01.xmlThird Party Advisory
- MITRE · CVE Programhttp://www.kb.cert.org/vuls/id/377544Third Party Advisory · US Government Resource
- MITRE · CVE Programhttp://www.mandriva.com/security/advisories?name=MDKSA-2007:174Broken Link
- MITRE · CVE Programhttp://www.novell.com/linux/security/advisories/2007_19_sr.htmlBroken Link
- MITRE · CVE Programhttp://www.redhat.com/support/errata/RHSA-2007-0858.htmlThird Party Advisory
- MITRE · CVE Programhttp://www.securityfocus.com/archive/1/478794/100/0/threaded (archived copy: the site no longer serves it)Third Party Advisory · VDB Entry
- MITRE · CVE Programhttp://www.securityfocus.com/bid/25533 (archived copy: the site no longer serves it)Broken Link · Third Party Advisory · VDB Entry
15 of 22 shown · show the other 7
- MITRE · CVE Programhttp://www.securitytracker.com/id?1018647Broken Link · Third Party Advisory · VDB Entry
- MITRE · CVE Programhttp://www.vupen.com/english/advisories/2007/3051Broken Link
- MITRE · CVE Programhttps://bugzilla.redhat.com/show_bug.cgi?id=250976Issue Tracking
- MITRE · CVE Programhttps://exchange.xforce.ibmcloud.com/vulnerabilities/36438Broken Link · VDB Entry
- MITRE · CVE Programhttps://issues.rpath.com/browse/RPL-1696Broken Link
- MITRE · CVE Programhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9278Broken Link
- MITRE · CVE Programhttps://www.redhat.com/archives/fedora-package-announce/2007-September/msg00087.htmlMailing List
Patch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | krb5-0:1.5-29 | 2007-09-04 | redhat |
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
(4 across 4 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| krb5 | — |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| krb5 | — |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| krb5 | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| krb5 | — |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(1)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 8× in last 7d / 19× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 84 of 114 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 16 repeat rows among the latest 100 are merged into the row they repeat. The 30 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-12 02:06 UTCEG score recompute
- 2026-10-11 13:37 UTCEPSS rescoreEPSS 6.1% · 93rd percentile
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- 2026-10-04 10:30 UTCOSV refresh
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- 2026-09-29 07:43 UTCEG score recompute
- 2026-09-18 19:20 UTCEPSS rescoreEPSS 6.1% · 93rd percentile
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- 2026-09-15 03:04 UTCEPSS rescoreEPSS 6.1% · 93rd percentile
- 2026-09-15 00:44 UTCOSV refresh
- 2026-09-12 14:54 UTCEPSS rescoreEPSS 6.1% · 93rd percentile
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- 2026-08-26 23:47 UTCOSV refresh
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- 2026-08-08 16:30 UTCEPSS rescoreEPSS 6.1% · 92nd percentile
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- 2026-07-28 15:30 UTCEPSS rescoreEPSS 6.1% · 92nd percentile
- 2026-07-26 13:33 UTCEG score recomputeFirst assessed: 8.5 HIGH
- 2026-07-25 15:00 UTCOSV refresh
- 2026-07-25 14:12 UTCEPSS rescoreEPSS 6.1% · 92nd percentile
- 2026-07-24 14:11 UTCEPSS rescoreEPSS 6.1% · 92nd percentile
- 2026-07-23 14:13 UTCEPSS rescoreEPSS 6.1% · 92nd percentile
- 2026-07-23 00:54 UTCEG score recompute
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- 2026-07-22 21:37 UTCEG score recompute
- 2026-07-22 14:03 UTCEPSS rescoreEPSS 6.1% · 92nd percentile
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- 2026-07-08 09:35 UTCOSV refresh
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- 2026-06-21 01:56 UTCEPSS rescoreEPSS 6.1% · 92nd percentile
- 2026-06-19 21:23 UTCOSV refresh
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Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:11:krb5
- CVE-2011-4862EG 10.0EPSS p100HIGH
- CVE-2011-0285EG 10.0EPSS p97HIGH
- CVE-2009-4212EG 10.0EPSS p94HIGH
- CVE-2009-0846EG 10.0EPSS p95HIGH
- CVE-2008-0947EG 10.0EPSS p95HIGH
- CVE-2007-5902EG 10.0EPSS p93HIGH
- CVE-2007-4743EG 10.0EPSS p91HIGH
- CVE-2007-3999EG 10.0EPSS p96HIGH
- CVE-2007-2442EG 10.0EPSS p96HIGH
- CVE-2007-0956EG 10.0EPSS p98HIGH
Same CWE
10 shownCWE-824
Frequently asked(4)
What is CVE-2007-4000?
When was CVE-2007-4000 made public?
Is CVE-2007-4000 actively exploited?
How do I remediate CVE-2007-4000?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2007-4000
Is Your Infrastructure Affected by CVE-2007-4000?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.