vciy

CVE-2015-2305

INDEX BUILT · 2026-09-20

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Integer overflow in the regcomp implementation in the Henry Spencer BSD regex library (aka rxspencer) alpha3.8.g5 on 32-bit platforms, as used in…

CVE-2015-23053 of 4 sources documented this
29

rank 29 = 2 + 17 + 1 + 9 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.08883  ·  without this subject the record ranks 27

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 6.8, from NVD  ·  without this subject the record ranks 12

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-03-06  ·  without this subject the record ranks 28

How much of the world it touches

NVD CPE configurations

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

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 29

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$286,000over the next 30 days, if this record is yours
Movement-$298,000on 2025-03-30, the last material move, 1 year, 5 months before this reading
Basisassumeda published average, not your estate

$286,000 = $4.99M incident cost x 0.6442432101309884 exposure x 0.08883 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

0.08883EPSSNOT IN KEVas of 2026-09-20
Severity6.8 MEDIUMreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-06-15, 85 days at 0.09, as of 2026-09-08. arc-rules@v1

Foresight · where to check next

Google AndroidQualcomm, Inc.Microsoft WindowsMicrosoft WindowsGoogle ChromeMicrosoft Office2305

This record is one instance of CWE-190, integer overflow or wraparound. The index holds 3586 prior instances of this class, 21 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 signal

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · no authenticationreceipt
ImpactPartial confidentiality, integrity and availability lossreceipt
Scored fromCVSS v2.0 · NVD's vectorreceipt
Weakness classCWE-190 Integer Overflow or Wraparoundreceipt
Published consequencesCWE-190: Availability: DoS: Crash, Exit, or Restart, DoS: Resource Consumption (Memory), DoS: Instability; Integrity: Modify Memory; Confidentiality, Availability, Access Control: Execute…[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 branchphp 5.4.39; php 5.5.23; php 5.6.7receipt
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, NVD6.8 MEDIUMreceipt
Exploit probability0.08883 · top 5% of all CVEsreceipt
Blast breadth5 products across 5 vendorsderived
Assigned bymitrereceipt
Recorded changes34 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesRxspencer project rxspencer; Canonical ubuntu linux; Php; and 2 morereceipt
Published rangesrxspencer project rxspencer 3.8.g5; canonical ubuntu linux 10.04; canonical ubuntu linux 12.04; canonical ubuntu linux 14.04receipt
Show all 13 published ranges
rxspencer project rxspencer 3.8.g5
canonical ubuntu linux 10.04
canonical ubuntu linux 12.04
canonical ubuntu linux 14.04
canonical ubuntu linux 14.10
canonical ubuntu linux 15.04
debian linux 7.0
debian linux 8.0
opensuse 13.1
opensuse 13.2
php >= 5.4.0 < 5.4.39
php >= 5.5.0 < 5.5.23
php >= 5.6.0 < 5.6.7

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

Integer overflow in the regcomp implementation in the Henry Spencer BSD regex library (aka rxspencer) alpha3.8.g5 on 32-bit platforms, as used in NetBSD through 6.1.5 and other products, might allow context-dependent attackers to execute arbitrary code via a large regular expression that leads to a heap-based buffer overflow. receipt

NVD's analysis a second authority

severity
6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
weakness
CWE-190
affected versions
rxspencer project rxspencer 3.8.g5; canonical ubuntu linux 10.04; canonical ubuntu linux 12.04; and 10 more, listed in full below

check it yourself securityfocus.com debian.org openwall.com lists.opensuse.org lists.apple.com oracle.com +14 morereceipt

Dated events

2025-03-17EPSS moved 0.01 to 0.422026-06-15EPSS moved 0.20 to 0.08

Movement the material steps

4 Feb 20220.04421
7 Mar 20230.00702 · scoring model v2023.03.01
17 Mar 20250.42152 · crossed 0.10 · scoring model v2025.03.14
29 Mar 20250.51428 · crossed 0.50
30 Mar 20250.42152 · crossed 0.50
20 Aug 20250.2604
6 Mar 20260.39178
8 Mar 20260.27615
15 Jun 20260.0837 · crossed 0.10 · scoring model v2026.06.15
8 Sep 20260.08883
Show all 34 observations
4 Feb 20220.04421
7 Mar 20230.00702
25 Mar 20230.00973
29 Apr 20230.00758
28 May 20230.00688
5 Dec 20230.00742
6 Mar 20240.00560
17 Dec 20240.00929
17 Mar 20250.42152
29 Mar 20250.51428
30 Mar 20250.42152
30 May 20250.34726
9 Jun 20250.37283
30 Jul 20250.37262
20 Aug 20250.2604
21 Aug 20250.2092
11 Sep 20250.28683
1 Oct 20250.28702
17 Oct 20250.30482
27 Oct 20250.28683
28 Oct 20250.30482
27 Dec 20250.28683
28 Dec 20250.30482
6 Mar 20260.39178
8 Mar 20260.27615
13 Mar 20260.31019
26 Mar 20260.28664
29 Apr 20260.32919
24 May 20260.22421
12 Jun 20260.20163
15 Jun 20260.0837
1 Aug 20260.0834
22 Aug 20260.08407
8 Sep 20260.08883

34 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 0.08883Published2015-03-30Index as of2026-09-08

The record had been public for 11 years, 5 months when this index was last written.

Published 2015-03-30 receipt · Index as of 2026-09-08 derived

The pattern, elsewhere

This record is one instance of CWE-190, integer overflow or wraparound. The index holds 3586 prior instances of this class, 21 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2025-48595 · Google Androidnothing comparable heldKEV listed · 2026receipt
CVE-2026-21385 · Qualcomm, Inc. Snapdragonnothing comparable heldKEV listed · 2026receipt
CVE-2025-24985 · Microsoft Windows 10 Version 1507nothing comparable heldKEV listed · 2025receipt
CVE-2024-38080 · Microsoft Windows Server 2022nothing comparable heldKEV listed · 2024receipt
CVE-2023-2136 · Google Chromenothing comparable heldKEV listed · 2023receipt
CVE-2023-21823 · Microsoft Office for Androidnothing comparable heldKEV listed · 2023receipt

"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

3586 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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