Evidence used
- No CISA KEV confirmation is currently recorded.
- EPSS is 0.41% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2025
CVE-2025-48386High confidence
Git allows a buffer overflow in 'wincred' credential helper
git · git
Official source article: GitHub GHSA-4V56-3XVJ-XVFR ↗. Check the applicable product and release in the original source.
6.3MediumCVSS 3.1
Patch only the product branches with a verified fix
Fix availability varies by productMedium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 83 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityMedium→Operational priority:Medium, unchanged from published severity.unchanged
Compensating controls
- Apply the linked authoritative mitigation while planning the permanent fix.
- Restrict local access and enforce least privilege on affected hosts.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs git git and falls inside the recorded affected range.
- Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Remediation availability differs by product scope
Verified remediation exists for at least one product or source, but 83 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
- Red Hat Product Security: 83 affected or under-investigation product states without a fixed product state in the same current advisory
Distribution package intelligence
8 package statesRelease-specific package status
Alpine, Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.
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 release | Source package | Vendor state | Fixed version | Evidence |
|---|---|---|---|---|
| Alpine v3.23v3.23 · main | git | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 2.50.1-r0 | Alpine Security Database ↗Source updated 3 Oct 2026 |
| Alpine v3.22v3.22 · main | git | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 2.49.1-r0 | Alpine Security Database ↗Source updated 3 Oct 2026 |
| Alpine v3.21v3.21 · main | git | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 2.47.3-r0 | Alpine Security Database ↗Source updated 3 Oct 2026 |
| Debian trixietrixie · source | git | Not affectedDebian marks this release not affected (fixed-version marker 0). | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Debian bookwormbookworm · source | git | Not affectedDebian marks this release not affected (fixed-version marker 0). | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Debian forkyforky · source | git | Not affectedDebian marks this release not affected (fixed-version marker 0). | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Debian sidsid · source | git | Not affectedDebian marks this release not affected (fixed-version marker 0). | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Ubuntu 24.04 LTSnoble · standard archive | git | Vendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree. | 1:2.43.0-1ubuntu7.3 | Canonical Ubuntu Security ↗Source updated 5 Oct 2026 |
Direct vendor intelligence
1 currentAuthoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
CVE-2025-48386 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitygit: Git buffer overflow
The vendor explicitly identifies these products as affected by this CVE.
- git as a component of Red Hat Enterprise Linux 10
- git-all as a component of Red Hat Enterprise Linux 10
- git-core as a component of Red Hat Enterprise Linux 10
- git-core-doc as a component of Red Hat Enterprise Linux 10
- git-credential-libsecret as a component of Red Hat Enterprise Linux 10
- git-daemon as a component of Red Hat Enterprise Linux 10
- git-email as a component of Red Hat Enterprise Linux 10
- git-gui as a component of Red Hat Enterprise Linux 10
- git-instaweb as a component of Red Hat Enterprise Linux 10
- git-subtree as a component of Red Hat Enterprise Linux 10
- git-svn as a component of Red Hat Enterprise Linux 10
- git.src as a component of Red Hat Enterprise Linux 10
- Summary
- A credential handling flaw has been discovered in git. The wincred credential helper uses a static buffer (target) as a unique key for storing and comparing against internal storage. This credential helper does not properly bounds check the available space remaining in the buffer before appending to it with wcsncat(), which can lead to buffer overflows.
- Remediation
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 83 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
Fix availability varies by product01
What, why and how
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. The wincred credential helper uses a static buffer (target) as a unique key for storing and comparing against internal storage. This credential helper does not properly bounds check the available space remaining in the buffer before appending to it with wcsncat(), leading to potential buffer overflows. This vulnerability is fixed in v2.43.7, v2.44.4, v2.45.4, v2.46.4, v2.47.3, v2.48.2, v2.49.1, and v2.50.1.
What
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. The wincred credential helper uses a static buffer (target) as a unique key for storing and comparing against internal storage. This credential helper does not properly bounds check the available space remaining in the buffer before appending to it with wcsncat(), leading to potential buffer overflows. This vulnerability is fixed in v2.43.7, v2.44.4, v2.45.4, v2.46.4, v2.47.3, v2.48.2, v2.49.1, and v2.50.1.
Why
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
How
An attacker operating through local access 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
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. The wincred credential helper uses a static buffer (target) as a unique key for storing and comparing against internal storage. This credential helper does not properly bounds check the available space remaining in the buffer before appending to it with wcsncat(), leading to potential buffer overflows. This vulnerability is fixed in v2.43.7, v2.44.4, v2.45.4, v2.46.4, v2.47.3, v2.48.2, v2.49.1, and v2.50.1.
Why
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
How
An attacker operating through local access 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 No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.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 None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.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
- local access → Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') → cause the confidentiality, integrity or availability impact described by the vendor
- Attack surface
- Local
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- Required interaction required
- Attack complexity
- Low: no specialised conditions are recorded
- Security boundary
- Changed: exploitation can affect a different security authority
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-120 ↗
CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'). The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:NCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVLocalAttack vector: The attacker needs local access to the vulnerable system.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.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.- Post-exploitation / living off the land
- Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
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 availability varies by product
- Affected
- git as a component of Red Hat Enterprise Linux 10
- git-all as a component of Red Hat Enterprise Linux 10
- git-core as a component of Red Hat Enterprise Linux 10
- git-core-doc as a component of Red Hat Enterprise Linux 10
- git-credential-libsecret as a component of Red Hat Enterprise Linux 10
- git-daemon as a component of Red Hat Enterprise Linux 10
- git-email as a component of Red Hat Enterprise Linux 10
- git-gui as a component of Red Hat Enterprise Linux 10
- git-instaweb as a component of Red Hat Enterprise Linux 10
- git-subtree as a component of Red Hat Enterprise Linux 10
- git-svn as a component of Red Hat Enterprise Linux 10
- git.src as a component of Red Hat Enterprise Linux 10
- gitk as a component of Red Hat Enterprise Linux 10
- gitweb as a component of Red Hat Enterprise Linux 10
- perl-Git as a component of Red Hat Enterprise Linux 10
- perl-Git-SVN as a component of Red Hat Enterprise Linux 10
- emacs-git as a component of Red Hat Enterprise Linux 6
- emacs-git-el as a component of Red Hat Enterprise Linux 6
- git as a component of Red Hat Enterprise Linux 6
- git-all as a component of Red Hat Enterprise Linux 6
- git-cvs as a component of Red Hat Enterprise Linux 6
- git-daemon as a component of Red Hat Enterprise Linux 6
- git-email as a component of Red Hat Enterprise Linux 6
- git-gui as a component of Red Hat Enterprise Linux 6
- git-svn as a component of Red Hat Enterprise Linux 6
- git.src as a component of Red Hat Enterprise Linux 6
- gitk as a component of Red Hat Enterprise Linux 6
- gitweb as a component of Red Hat Enterprise Linux 6
- perl-Git as a component of Red Hat Enterprise Linux 6
- emacs-git as a component of Red Hat Enterprise Linux 7
- and 53 more
- Action
- Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
- Workaround
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
04
Evidence and provenance
Published 8 Jul 2025 · Last source change 4 Nov 2025, 21:11 UTC · CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source FIRST · tracked since 2026-08-14
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2025-20679
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD not scheduled
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- git as a component of Red Hat Enterprise Linux 10; git-all as a component of Red Hat Enterprise Linux 10; git-core as a component of Red Hat Enterprise Linux 10; git-core-doc as a component of Red Hat Enterprise Linux 10; git-credential-libsecret as a component of Red Hat Enterprise Linux 10; git-daemon as a component of Red Hat Enterprise Linux 10; git-email as a component of Red Hat Enterprise Linux 10; git-gui as a component of Red Hat Enterprise Linux 10; git-instaweb as a component of Red Hat Enterprise Linux 10; git-subtree as a component of Red Hat Enterprise Linux 10; git-svn as a component of Red Hat Enterprise Linux 10; git.src as a component of Red Hat Enterprise Linux 10; gitk as a component of Red Hat Enterprise Linux 10; gitweb as a component of Red Hat Enterprise Linux 10; perl-Git as a component of Red Hat Enterprise Linux 10; perl-Git-SVN as a component of Red Hat Enterprise Linux 10; emacs-git as a component of Red Hat Enterprise Linux 6; emacs-git-el as a component of Red Hat Enterprise Linux 6; git as a component of Red Hat Enterprise Linux 6; git-all as a component of Red Hat Enterprise Linux 6; git-cvs as a component of Red Hat Enterprise Linux 6; git-daemon as a component of Red Hat Enterprise Linux 6; git-email as a component of Red Hat Enterprise Linux 6; git-gui as a component of Red Hat Enterprise Linux 6; git-svn as a component of Red Hat Enterprise Linux 6; git.src as a component of Red Hat Enterprise Linux 6; gitk as a component of Red Hat Enterprise Linux 6; gitweb as a component of Red Hat Enterprise Linux 6; perl-Git as a component of Red Hat Enterprise Linux 6; emacs-git as a component of Red Hat Enterprise Linux 7; and 52 more
- After
- git as a component of Red Hat Enterprise Linux 10; git-all as a component of Red Hat Enterprise Linux 10; git-core as a component of Red Hat Enterprise Linux 10; git-core-doc as a component of Red Hat Enterprise Linux 10; git-credential-libsecret as a component of Red Hat Enterprise Linux 10; git-daemon as a component of Red Hat Enterprise Linux 10; git-email as a component of Red Hat Enterprise Linux 10; git-gui as a component of Red Hat Enterprise Linux 10; git-instaweb as a component of Red Hat Enterprise Linux 10; git-subtree as a component of Red Hat Enterprise Linux 10; git-svn as a component of Red Hat Enterprise Linux 10; git.src as a component of Red Hat Enterprise Linux 10; gitk as a component of Red Hat Enterprise Linux 10; gitweb as a component of Red Hat Enterprise Linux 10; perl-Git as a component of Red Hat Enterprise Linux 10; perl-Git-SVN as a component of Red Hat Enterprise Linux 10; emacs-git as a component of Red Hat Enterprise Linux 6; emacs-git-el as a component of Red Hat Enterprise Linux 6; git as a component of Red Hat Enterprise Linux 6; git-all as a component of Red Hat Enterprise Linux 6; git-cvs as a component of Red Hat Enterprise Linux 6; git-daemon as a component of Red Hat Enterprise Linux 6; git-email as a component of Red Hat Enterprise Linux 6; git-gui as a component of Red Hat Enterprise Linux 6; git-svn as a component of Red Hat Enterprise Linux 6; git.src as a component of Red Hat Enterprise Linux 6; gitk as a component of Red Hat Enterprise Linux 6; gitweb as a component of Red Hat Enterprise Linux 6; perl-Git as a component of Red Hat Enterprise Linux 6; emacs-git as a component of Red Hat Enterprise Linux 7; and 53 more
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.