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Full vulnerability report · 2023
CVE-2023-29549High confidence

This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES

Mozilla · Firefox for Android

6.5MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 0.33% for the current model date.

Compensating controls

  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Mozilla Firefox for Android and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Distribution package intelligence

Release-specific package status

Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

1 package state
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian sidsid · sourcefirefoxVendor fix publishedDebian records a fixed source-package version for this release.112.0-1Debian Security Tracker ↗Source updated 5 Oct 2026
Optional official sources

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

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

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-2023-33091

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 actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect realm. This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

What

Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect realm. This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

Why

The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.

How

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

What

Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect realm. This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

Why

The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.

How

An attacker operating through a network path may attempt exploitation without authentication after a 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 → Inadequate Encryption Strength → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
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-326 ↗

CWE-326: Inadequate Encryption Strength. The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.

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:R/S:U/C:N/I:H/A:N

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.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
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-326
A

Official authority intelligence

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

BSI · German · WID-SEC-2023-0941Mozilla Firefox und Thunderbird: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Firefox, Mozilla Firefox ESR und Mozilla Thunderbird ausnutzen, um beliebigen Code auszuführen, um Informationen offenzulegen und um Sicherheitsmechanismen zu umgehen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20230607Security Bulletin 07 Jun 2023

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 07 Jun 2023, published on 7 June 2023. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-0303Multiples vulnérabilités dans les produits Mozilla

d?id=CVE-2023-29540 Référence CVE CVE-2023-29541 https://www.cve.org/CVERecord?id=CVE-2023-29541 Référence CVE CVE-2023-29542 https://www.cve.org/CVERecord?id=CVE-2023-29542 Référence CVE CVE-2023-29543 https://www.cve.org/CVERecord?id=CVE-2023-29543 Référence CVE CVE-2023-29544 https://www.cve.org/CVERecord?id=CVE-2023-29544 Référence CVE CVE-2023-29545 https://www.cve.org/CVERecord?id=CVE-2023-29545 Référence CVE CVE-2023-29546 https://www.cve.org/CVERecord?id=CVE-2023-29546 Référence CVE CVE-2023-29547 https://www.cve.org/CVERecord?id=CVE-2023-29547 Référence CVE CVE-2023-29548 https://www.cve.org/CVERecord?id=CVE-2023-29548 Référence CVE CVE-2023-29549 https://www.cve.org/CVERecord?id=CVE-2023-29549 Référence CVE CVE-2023-29550 https://www.cve.org/CVERecord?id=CVE-2023-29550 Référence CVE CVE-2023-29551 https://www.cve.org/CVERecord?id=CVE-2023-29551 Gestion détaillée du document le 12 avril 2023 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 ↗
JVN iPedia · Japanese · JVNDB-2023-022555Mozilla Foundation の Mozilla Firefox および Mozilla Focus における暗号強度に関する脆弱性

Mozilla Foundation の Mozilla Firefox および Mozilla Focus には、暗号強度に関する脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5909Mozilla 제품 보안 업데이트 권고

rd에서 파일 다운로드 확장자 제한 우회 취약점 (CVE-2023-29542) [2] [3] [4] o Firefox의 디버깅 API에서 발생하는 Use-after-free 취약점 (CVE-2023-29543) [2] o Firefox에서 발생하는 Garbage Collector의 메모리 손상 취약점 (CVE-2023-29544) [2] o Windows 용 Firefox, Firefox ESR, Thunderbird에서 다른 이름으로 링크 저장 시 발생하는 환경 변수 취약점 (CVE-2023-29545) [2] [3] [4] o Android 용 Firefox에서 발생하는 Private Browsing의 주소 표시줄 화면 녹화 취약점 (CVE-2023-29546) [2] o Firefox에서 발생하는 보안 문서 쿠키 스푸핑 취약점 (CVE-2023-29547) [2] o Firefox ESR, Thunderbird의 Safe Browsing에서 발생하는 메모리 손상 취약점 (CVE-2023-1945) [3] [4] o Firefox, Firefox ESR, Thunderbird에서 ARM64의 잘못된 최적화 취약점 (CVE-2023-29548) [2] [3] [4] o Firefox에서 발생하는 자바스크립트의 bind 함수 실패 가능 취약점 (CVE-2023-29549) [2] o Firefox, Firefox ESR, Thunderbird에서 발생하는 메모리 손상 취약점 (CVE-2023-29550) [2] [3] [4] o Firefox에서 발생하는 메모리 손상 취약점 (CVE-2023-29551) [2] 영향받는 제품 및 해결 방안 | 제품명 | 영향받는 버전 | 해결 버전 | | --- | --- | --- | | Firefox Firefox for Android Focus for Android | 112 이전 버전 | 112 | | Firefox ESR Thunderbird | 102.10 이전 버전 | 102.10 | ※ 하단의 참고사이트를 확인하여 업데이트 수행 [5] 기타 문의사항 o 한국인터넷진흥원 사이버민원센터: 국번없이 118 [참고사이트] [1] https://www.mozilla.org/en-US/security/advisories [2] https://www.mozilla.org/en-US/security/advisories/mfsa2023-13 [3] https://www.mozilla.org/en-US/security/advisories/mfsa2023-14 [4] https://www.mozilla.org/en-US/security/advisories/mfsa2023-15 [5]

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
  • Firefox for Android: unspecified < 112
  • Firefox: unspecified < 112
  • Focus for Android: unspecified < 112
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 Jun 2023 · Last source change 10 Jan 2025, 19:18 UTC · CWE-326 · Inadequate Encryption Strength

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-2023-33091
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
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
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-2023-29549 · cve.blacktree.nl