BlackTreeCVE Intelligence
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Full vulnerability report · 2015
CVE-2015-8386High confidence

n/a: Improper Restriction of Operations within the Bounds of a Memory Buffer

n/a · n/a

9.8CriticalCVSS 3.1
Recommended action
Within 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Fix not verified
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2015-8268

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Fix not verified
01

What, why and how

PCRE before 8.38 mishandles the interaction of lookbehind assertions and mutually recursive subpatterns, which allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

What

PCRE before 8.38 mishandles the interaction of lookbehind assertions and mutually recursive subpatterns, which allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

What

PCRE before 8.38 mishandles the interaction of lookbehind assertions and mutually recursive subpatterns, which allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Restriction of Operations within the Bounds of a Memory Buffer → disrupt the affected service
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-119

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer. The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedDenial of serviceCWE-119
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2023-1392PCRE (Perl Compatible Regular Expressions): Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in PCRE (Perl Compatible Regular Expressions) ausnutzen, um einen Denial of Service Angriff durchzuführen und um Informationen offen zu legen.

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-1137Multiples vulnérabilités dans les produits IBM

de/7255729 Bulletin de sécurité IBM 7255731 du 23 décembre 2025 https://www.ibm.com/support/pages/node/7255731 Référence CVE CVE-2002-0059 https://www.cve.org/CVERecord?id=CVE-2002-0059 Référence CVE CVE-2015-2327 https://www.cve.org/CVERecord?id=CVE-2015-2327 Référence CVE CVE-2015-2328 https://www.cve.org/CVERecord?id=CVE-2015-2328 Référence CVE CVE-2015-8381 https://www.cve.org/CVERecord?id=CVE-2015-8381 Référence CVE CVE-2015-8383 https://www.cve.org/CVERecord?id=CVE-2015-8383 Référence CVE CVE-2015-8384 https://www.cve.org/CVERecord?id=CVE-2015-8384 Référence CVE CVE-2015-8385 https://www.cve.org/CVERecord?id=CVE-2015-8385 Référence CVE CVE-2015-8386 https://www.cve.org/CVERecord?id=CVE-2015-8386 Référence CVE CVE-2015-8387 https://www.cve.org/CVERecord?id=CVE-2015-8387 Référence CVE CVE-2015-8388 https://www.cve.org/CVERecord?id=CVE-2015-8388 Référence CVE CVE-2015-8390 https://www.cve.org/CVERecord?id=CVE-2015-8390 Référence CVE CVE-2015-8391 https://www.cve.org/CVERecord?id=CVE-2015-8391 Référence CVE CVE-2015-8392 https://www.cve.org/CVERecord?id=CVE-2015-8392 Référence CVE CVE-2015-8393 https://www.cve.org/CVERecord?id=CVE-2015-8393 Référence CVE CVE-2015-8394 https://www.cve.org/CVERecord?id=CVE-2015-8394 Référence CVE CVE-2015-8395 https://www.cve.org/CVERecord?id=CVE-2015-8395 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0939Multiples vulnérabilités dans les produits IBM

ode/7174440 Bulletin de sécurité IBM 7174441 du 30 octobre 2024 https://www.ibm.com/support/pages/node/7174441 Référence CVE CVE-2002-0059 https://www.cve.org/CVERecord?id=CVE-2002-0059 Référence CVE CVE-2012-2677 https://www.cve.org/CVERecord?id=CVE-2012-2677 Référence CVE CVE-2015-2327 https://www.cve.org/CVERecord?id=CVE-2015-2327 Référence CVE CVE-2015-2328 https://www.cve.org/CVERecord?id=CVE-2015-2328 Référence CVE CVE-2015-8381 https://www.cve.org/CVERecord?id=CVE-2015-8381 Référence CVE CVE-2015-8383 https://www.cve.org/CVERecord?id=CVE-2015-8383 Référence CVE CVE-2015-8385 https://www.cve.org/CVERecord?id=CVE-2015-8385 Référence CVE CVE-2015-8386 https://www.cve.org/CVERecord?id=CVE-2015-8386 Référence CVE CVE-2015-8387 https://www.cve.org/CVERecord?id=CVE-2015-8387 Référence CVE CVE-2015-8388 https://www.cve.org/CVERecord?id=CVE-2015-8388 Référence CVE CVE-2015-8390 https://www.cve.org/CVERecord?id=CVE-2015-8390 Référence CVE CVE-2015-8391 https://www.cve.org/CVERecord?id=CVE-2015-8391 Référence CVE CVE-2015-8392 https://www.cve.org/CVERecord?id=CVE-2015-8392 Référence CVE CVE-2015-8393 https://www.cve.org/CVERecord?id=CVE-2015-8393 Référence CVE CVE-2015-8394 https://www.cve.org/CVERecord?id=CVE-2015-8394 Référence CVE CVE-2015-8395 https://www.cve.org/CVERecord?id=CVE-2015-8395 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0145Multiples vulnérabilités dans les produits IBM

sécurité IBM 7118351 du 15 février 2024 https://www.ibm.com/support/pages/node/7118351 Bulletin de sécurité IBM 7118592 du 16 février 2024 https://www.ibm.com/support/pages/node/7118592 Référence CVE CVE-2002-0059 https://www.cve.org/CVERecord?id=CVE-2002-0059 Référence CVE CVE-2015-2327 https://www.cve.org/CVERecord?id=CVE-2015-2327 Référence CVE CVE-2015-2328 https://www.cve.org/CVERecord?id=CVE-2015-2328 Référence CVE CVE-2015-8381 https://www.cve.org/CVERecord?id=CVE-2015-8381 Référence CVE CVE-2015-8383 https://www.cve.org/CVERecord?id=CVE-2015-8383 Référence CVE CVE-2015-8385 https://www.cve.org/CVERecord?id=CVE-2015-8385 Référence CVE CVE-2015-8386 https://www.cve.org/CVERecord?id=CVE-2015-8386 Référence CVE CVE-2015-8387 https://www.cve.org/CVERecord?id=CVE-2015-8387 Référence CVE CVE-2015-8388 https://www.cve.org/CVERecord?id=CVE-2015-8388 Référence CVE CVE-2015-8390 https://www.cve.org/CVERecord?id=CVE-2015-8390 Référence CVE CVE-2015-8391 https://www.cve.org/CVERecord?id=CVE-2015-8391 Référence CVE CVE-2015-8392 https://www.cve.org/CVERecord?id=CVE-2015-8392 Référence CVE CVE-2015-8393 https://www.cve.org/CVERecord?id=CVE-2015-8393 Référence CVE CVE-2015-8394 https://www.cve.org/CVERecord?id=CVE-2015-8394 Référence CVE CVE-2015-8395 https://www.cve.org/CVERecord?id=CVE-2015-8395 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-1007Multiples vulnérabilités dans les produits IBM

curité IBM 7087234 du 01 décembre 2023 https://www.ibm.com/support/pages/node/7087234 Bulletin de sécurité IBM 7090362 du 05 décembre 2023 https://www.ibm.com/support/pages/node/7090362 Référence CVE CVE-2002-0059 https://www.cve.org/CVERecord?id=CVE-2002-0059 Référence CVE CVE-2015-2327 https://www.cve.org/CVERecord?id=CVE-2015-2327 Référence CVE CVE-2015-2328 https://www.cve.org/CVERecord?id=CVE-2015-2328 Référence CVE CVE-2015-8381 https://www.cve.org/CVERecord?id=CVE-2015-8381 Référence CVE CVE-2015-8383 https://www.cve.org/CVERecord?id=CVE-2015-8383 Référence CVE CVE-2015-8385 https://www.cve.org/CVERecord?id=CVE-2015-8385 Référence CVE CVE-2015-8386 https://www.cve.org/CVERecord?id=CVE-2015-8386 Référence CVE CVE-2015-8387 https://www.cve.org/CVERecord?id=CVE-2015-8387 Référence CVE CVE-2015-8388 https://www.cve.org/CVERecord?id=CVE-2015-8388 Référence CVE CVE-2015-8390 https://www.cve.org/CVERecord?id=CVE-2015-8390 Référence CVE CVE-2015-8391 https://www.cve.org/CVERecord?id=CVE-2015-8391 Référence CVE CVE-2015-8392 https://www.cve.org/CVERecord?id=CVE-2015-8392 Référence CVE CVE-2015-8393 https://www.cve.org/CVERecord?id=CVE-2015-8393 Référence CVE CVE-2015-8394 https://www.cve.org/CVERecord?id=CVE-2015-8394 Référence CVE CVE-2015-8395 https://www.cve.org/CVERecord?id=CVE-2015-8395 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-650Multiples vulnérabilités dans les produits Juniper

.cve.org/CVERecord?id=CVE-2015-5228 Référence CVE CVE-2015-5602 https://www.cve.org/CVERecord?id=CVE-2015-5602 Référence CVE CVE-2015-6525 https://www.cve.org/CVERecord?id=CVE-2015-6525 Référence CVE CVE-2015-7036 https://www.cve.org/CVERecord?id=CVE-2015-7036 Référence CVE CVE-2015-7705 https://www.cve.org/CVERecord?id=CVE-2015-7705 Référence CVE CVE-2015-7805 https://www.cve.org/CVERecord?id=CVE-2015-7805 Référence CVE CVE-2015-8035 https://www.cve.org/CVERecord?id=CVE-2015-8035 Référence CVE CVE-2015-8380 https://www.cve.org/CVERecord?id=CVE-2015-8380 Référence CVE CVE-2015-8385 https://www.cve.org/CVERecord?id=CVE-2015-8385 Référence CVE CVE-2015-8386 https://www.cve.org/CVERecord?id=CVE-2015-8386 Référence CVE CVE-2015-8387 https://www.cve.org/CVERecord?id=CVE-2015-8387 Référence CVE CVE-2015-8388 https://www.cve.org/CVERecord?id=CVE-2015-8388 Référence CVE CVE-2015-8390 https://www.cve.org/CVERecord?id=CVE-2015-8390 Référence CVE CVE-2015-8391 https://www.cve.org/CVERecord?id=CVE-2015-8391 Référence CVE CVE-2015-8394 https://www.cve.org/CVERecord?id=CVE-2015-8394 Référence CVE CVE-2015-8540 https://www.cve.org/CVERecord?id=CVE-2015-8540 Référence CVE CVE-2015-8947 https://www.cve.org/CVERecord?id=CVE-2015-8947 Référence CVE CVE-2016-10195 https://www.cve.org/CVERecord?id=CVE-2016-10195

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-293Multiples vulnérabilités dans Tenable Nessus Agent

.cve.org/CVERecord?id=CVE-2015-3217 Référence CVE CVE-2015-5073 https://www.cve.org/CVERecord?id=CVE-2015-5073 Référence CVE CVE-2015-7995 https://www.cve.org/CVERecord?id=CVE-2015-7995 Référence CVE CVE-2015-8380 https://www.cve.org/CVERecord?id=CVE-2015-8380 Référence CVE CVE-2015-8381 https://www.cve.org/CVERecord?id=CVE-2015-8381 Référence CVE CVE-2015-8382 https://www.cve.org/CVERecord?id=CVE-2015-8382 Référence CVE CVE-2015-8383 https://www.cve.org/CVERecord?id=CVE-2015-8383 Référence CVE CVE-2015-8384 https://www.cve.org/CVERecord?id=CVE-2015-8384 Référence CVE CVE-2015-8385 https://www.cve.org/CVERecord?id=CVE-2015-8385 Référence CVE CVE-2015-8386 https://www.cve.org/CVERecord?id=CVE-2015-8386 Référence CVE CVE-2015-8387 https://www.cve.org/CVERecord?id=CVE-2015-8387 Référence CVE CVE-2015-8388 https://www.cve.org/CVERecord?id=CVE-2015-8388 Référence CVE CVE-2015-8389 https://www.cve.org/CVERecord?id=CVE-2015-8389 Référence CVE CVE-2015-8390 https://www.cve.org/CVERecord?id=CVE-2015-8390 Référence CVE CVE-2015-8391 https://www.cve.org/CVERecord?id=CVE-2015-8391 Référence CVE CVE-2015-8392 https://www.cve.org/CVERecord?id=CVE-2015-8392 Référence CVE CVE-2015-8394 https://www.cve.org/CVERecord?id=CVE-2015-8394 Référence CVE CVE-2015-8395 https://www.cve.org/CVERecord?id=CVE-2015-8395 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-288Multiples vulnérabilités dans Tenable Nessus

.cve.org/CVERecord?id=CVE-2015-3217 Référence CVE CVE-2015-5073 https://www.cve.org/CVERecord?id=CVE-2015-5073 Référence CVE CVE-2015-7995 https://www.cve.org/CVERecord?id=CVE-2015-7995 Référence CVE CVE-2015-8380 https://www.cve.org/CVERecord?id=CVE-2015-8380 Référence CVE CVE-2015-8381 https://www.cve.org/CVERecord?id=CVE-2015-8381 Référence CVE CVE-2015-8382 https://www.cve.org/CVERecord?id=CVE-2015-8382 Référence CVE CVE-2015-8383 https://www.cve.org/CVERecord?id=CVE-2015-8383 Référence CVE CVE-2015-8384 https://www.cve.org/CVERecord?id=CVE-2015-8384 Référence CVE CVE-2015-8385 https://www.cve.org/CVERecord?id=CVE-2015-8385 Référence CVE CVE-2015-8386 https://www.cve.org/CVERecord?id=CVE-2015-8386 Référence CVE CVE-2015-8387 https://www.cve.org/CVERecord?id=CVE-2015-8387 Référence CVE CVE-2015-8388 https://www.cve.org/CVERecord?id=CVE-2015-8388 Référence CVE CVE-2015-8389 https://www.cve.org/CVERecord?id=CVE-2015-8389 Référence CVE CVE-2015-8390 https://www.cve.org/CVERecord?id=CVE-2015-8390 Référence CVE CVE-2015-8391 https://www.cve.org/CVERecord?id=CVE-2015-8391 Référence CVE CVE-2015-8392 https://www.cve.org/CVERecord?id=CVE-2015-8392 Référence CVE CVE-2015-8394 https://www.cve.org/CVERecord?id=CVE-2015-8394 Référence CVE CVE-2015-8395 https://www.cve.org/CVERecord?id=CVE-2015-8395 Ré

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2015-006066PCRE におけるサービス運用妨害 (DoS) の脆弱性

PCRE は、後読み (lookbehind) アサーションと相互再帰的サブパターンの対話を誤って処理するため、サービス運用妨害 (バッファオーバーフロー) 状態にされるなど、不特定の影響を受ける脆弱性が存在します。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
n/a: n/a
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 2 Dec 2015 · Last source change 6 Aug 2024, 08:13 UTC · CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2015-8268
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed from vendor advisory to no authoritative guidance recorded.
    Before
    vendor advisory
    After
    no authoritative guidance recorded
    CNA
  2. SeveritySeverity changed from Unknown to Critical.
    Before
    Unknown
    After
    Critical
    NIST NVD
  3. CVSS scoreCVSS score changed from not recorded to 9.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
    Before
    not recorded
    After
    9.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
    NIST NVD
  4. ENISA EUVD mappingEUVD-2015-8268 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2015-8268"}
    ENISA EUVD
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CNA
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2015-8386 · cve.blacktree.nl