vciy

CVE-2014-1524

INDEX BUILT · 2026-09-20

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The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and…

CVE-2014-15243 of 4 sources documented this
37

rank 37 = 2 + 25 + 0 + 10 + 0

rank@v1 · scheduled

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.07749  ·  without this subject the record ranks 35

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from NVD  ·  without this subject the record ranks 12

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 37

How much of the world it touches

NVD CPE configurations

20 products in the CPE ranges  ·  without this subject the record ranks 27

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 37

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$387,000over the next 30 days, if this record is yours
Movement-$393,000on 2025-03-30, the last material move, 1 year, 4 months before this reading
Basisassumeda published average, not your estate

$387,000 = $4.99M incident cost x 1 exposure x 0.07749 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.07749EPSSNOT IN KEVas of 2026-09-20
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementsteadyreceipt
PLATEAU10Minimal movement since 2022-02-04, 1638 days at 0.08, as of 2026-07-31. arc-rules@v1

Foresight · where to check next

SonicWall SonicOSCVE-2018-6789Zyxel ATP seriesCVE-2022-37055CVE-2020-150691524

This record is one instance of CWE-120, buffer copy without checking size of input ('classic buffer overflow'). The index holds 4490 prior instances of this class, 24 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')receipt
Published consequencesCWE-120: Integrity, Confidentiality, Availability: Modify Memory, Execute Unauthorized Code or Commands; Availability: Modify Memory, DoS: Crash, Exit, or Restart, DoS: Resource Consumption (CPU)[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchfirefox 24.5; firefox 29.0; seamonkey 2.26; thunderbird 24.5receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.07749 · top 6% of all CVEsreceipt
Blast breadth12 products across 4 vendorsderived
Assigned bymozillareceipt
Recorded changes10 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesMozilla firefox; Mozilla seamonkey; Mozilla thunderbird; and 9 morereceipt
Published rangesmozilla firefox < 29.0; mozilla firefox >= 24.0 < 24.5; mozilla seamonkey < 2.26; mozilla thunderbird < 24.5receipt
Show all 20 published ranges
mozilla firefox < 29.0
mozilla firefox >= 24.0 < 24.5
mozilla seamonkey < 2.26
mozilla thunderbird < 24.5
canonical ubuntu linux 12.04
canonical ubuntu linux 12.10
canonical ubuntu linux 13.10
canonical ubuntu linux 14.04
debian linux 7.0
debian linux 8.0
redhat enterprise linux desktop 5.0
redhat enterprise linux desktop 6.0
redhat enterprise linux eus 6.5
redhat enterprise linux server 5.0
redhat enterprise linux server 6.0
redhat enterprise linux server aus 6.5
redhat enterprise linux server eus 6.5
redhat enterprise linux server tus 6.5
redhat enterprise linux workstation 5.0
redhat enterprise linux workstation 6.0

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 does not properly check whether objects are XBL objects, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via crafted JavaScript code that accesses a non-XBL object as if it were an XBL object. receipt

NVD's analysis a second authority

severity
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-120
affected versions
mozilla firefox < 29.0; mozilla firefox >= 24.0 < 24.5; mozilla seamonkey < 2.26; and 17 more, listed in full below

check it yourself rhn.redhat.com lists.fedoraproject.org lists.opensuse.org lists.opensuse.org bugzilla.mozilla.org lists.opensuse.org +14 morereceipt

Dated events

2023-03-07EPSS moved 0.07 to 0.012025-03-29EPSS moved 0.06 to 0.142025-03-30EPSS moved 0.14 to 0.06

Movement the material steps

4 Feb 20220.07312
7 Mar 20230.01465 · scoring model v2023.03.01
17 Mar 20250.06412 · scoring model v2025.03.14
29 Mar 20250.14294 · crossed 0.10
30 Mar 20250.06412 · crossed 0.10
15 Jun 20260.07543 · scoring model v2026.06.15
31 Jul 20260.07749
Show all 10 observations
4 Feb 20220.07312
7 Mar 20230.01465
25 Oct 20230.01394
28 Apr 20240.01792
17 Dec 20240.01014
17 Mar 20250.06412
29 Mar 20250.14294
30 Mar 20250.06412
15 Jun 20260.07543
31 Jul 20260.07749

10 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.07749Published2014-04-30Index as of2026-07-31

The record had been public for 12 years, 3 months when this index was last written.

Published 2014-04-30 receipt · Index as of 2026-07-31 derived

The pattern, elsewhere

This record is one instance of CWE-120, buffer copy without checking size of input ('classic buffer overflow'). The index holds 4490 prior instances of this class, 24 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2020-5135 · SonicWall SonicOSmatches 8 of 8KEV listed · 2020receipt
CVE-2018-6789matches 8 of 8KEV listed · 2018receipt
CVE-2023-33009 · Zyxel ATP series firmwarematches 8 of 8KEV listed · 2023receipt
CVE-2023-33010 · Zyxel ATP series firmwarematches 8 of 8KEV listed · 2023receipt
CVE-2022-37055matches 8 of 8KEV listed · 2022receipt
CVE-2020-15069matches 8 of 8KEV listed · 2020receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

4490 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

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