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Full vulnerability report · 2020
CVE-2020-7450High confidence

n/a FreeBSD — Out-of-bounds Write

n/a · FreeBSD

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.

Patch available
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-2020-28576

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.

Patch available
01

What, why and how

In FreeBSD 12.1-STABLE before r357213, 12.1-RELEASE before 12.1-RELEASE-p2, 12.0-RELEASE before 12.0-RELEASE-p13, 11.3-STABLE before r357214, and 11.3-RELEASE before 11.3-RELEASE-p6, URL handling in libfetch with URLs containing username and/or password components is vulnerable to a heap buffer overflow allowing program misbehavior or malicious code execution.

What

In FreeBSD 12.1-STABLE before r357213, 12.1-RELEASE before 12.1-RELEASE-p2, 12.0-RELEASE before 12.0-RELEASE-p13, 11.3-STABLE before r357214, and 11.3-RELEASE before 11.3-RELEASE-p6, URL handling in libfetch with URLs containing username and/or password components is vulnerable to a heap buffer overflow allowing program misbehavior or malicious code execution.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In FreeBSD 12.1-STABLE before r357213, 12.1-RELEASE before 12.1-RELEASE-p2, 12.0-RELEASE before 12.0-RELEASE-p13, 11.3-STABLE before r357214, and 11.3-RELEASE before 11.3-RELEASE-p6, URL handling in libfetch with URLs containing username and/or password components is vulnerable to a heap buffer overflow allowing program misbehavior or malicious code execution.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

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 → Out-of-bounds Write → cause the confidentiality, integrity or availability impact described by the vendor
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-787 ↗

CWE-787: Out-of-bounds Write. The product writes data past the end, or before the beginning, of the intended buffer.

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.
NetworkUnauthenticatedCWE-787
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2026-2257Juniper JUNOS und JUNOS Evolved: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS, JUNOS Evolved, Juniper EX Series, Juniper MX Series, Juniper QFX Series und Juniper SRX Series ausnutzen, um einen Denial of Service Zustand herbeizuführen, um Informationen offenzulegen, um Code auszuführen und um ein undefiniertes Verhalten auszulösen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0852Multiples vulnérabilités dans les produits Juniper Networks

juillet 2026 Source(s) Bulletin de sécurité Juniper Networks 2026-07-Security-Bulletin-cRPD-Multiple-vulnerabilities-resolved-in-cRPD-26-2R1 du 08 juillet 2026 Bulletin de sécurité Juniper Networks 2026-07-Security-Bulletin-CTPView-Multiple-vulnerabilities-resolved-in-9-3R2-3-Release du 08 juillet 2026 Bulletin de sécurité Juniper Networks 2026-07-Security-Bulletin-Junos-Space-Multiple-vulnerabilities-resolved-in-26-1R1-Patch-V1-Release du 08 juillet 2026 Bulletin de sécurité Juniper Networks 2026-07-Security-Bulletin-Network-Director-Multiple-vulnerabilities-resolved-in-7-1R3-release du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2020-7450 du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2026-21901 du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2026-33794 du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2026-33799 du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2026-33800 du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2026-33801 du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2026-33802 du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2026-33803 du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2026-57019 du 08 juillet 2026 Bulletin de sécurité Juniper Networks CVE-2026-57020 d

Official advisory
CERT-FR · French · CERTFR-2020-AVI-645Multiples vulnérabilités dans les produits Juniper

ve.org/CVERecord?id=CVE-2019-9937 Référence CVE CVE-2020-10188 https://www.cve.org/CVERecord?id=CVE-2020-10188 Référence CVE CVE-2020-1656 https://www.cve.org/CVERecord?id=CVE-2020-1656 Référence CVE CVE-2020-1657 https://www.cve.org/CVERecord?id=CVE-2020-1657 Référence CVE CVE-2020-1660 https://www.cve.org/CVERecord?id=CVE-2020-1660 Référence CVE CVE-2020-1661 https://www.cve.org/CVERecord?id=CVE-2020-1661 Référence CVE CVE-2020-1662 https://www.cve.org/CVERecord?id=CVE-2020-1662 Référence CVE CVE-2020-1665 https://www.cve.org/CVERecord?id=CVE-2020-1665 Référence CVE CVE-2020-1682 https://www.cve.org/CVERecord?id=CVE-2020-1682 Référence CVE CVE-2020-7450 https://www.cve.org/CVERecord?id=CVE-2020-7450 Gestion détaillée du document le 15 octobre 2020 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

Official advisory
CERT-FR · French · CERTFR-2020-AVI-108Multiples vulnérabilités dans Stormshield Network Security

De multiples vulnérabilités ont été découvertes dans Stormshield Network Security. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance et une injection de code indirecte à distance (XSS).

Official advisory
NCSC-NL · Dutch · NCSC-2026-0224Kwetsbaarheden verholpen in Juniper Networks Junos OS en Junos OS Evolved

Heap buffer overflow vulnerabilities in libfetch affecting FreeBSD versions prior to patches in 12.1, 12.0, and 11.3, as well as Juniper Networks Junos OS Evolved, arise from improper URL handling with username and/or password components, enabling potential code execution.

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.
Patch available
Affected
12.1-STABLE before r357213; 12.1-RELEASE before 12.1-RELEASE-p2; 12.0-RELEASE before 12.0-RELEASE-p13; 11.3-STABLE before r357214; 11.3-RELEASE before 11.3-RELEASE-p6
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
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 18 Feb 2020 · Last source change 4 Aug 2024, 09:25 UTC · CWE-787 · Out-of-bounds Write

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 2026-08-14
European sourceENISA EUVD · EUVD-2020-28576
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 →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2020-28576↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
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-2020-7450 · cve.blacktree.nl