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Full vulnerability report · 2025
CVE-2025-8176High confidence

LibTIFF tiffmedian.c get_histogram use after free

n/a · LibTIFF

4.8MediumCVSS 4.0
Recommended action
Within 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

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.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivetiffVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.4.5.1+git230720-4ubuntu2.3Canonical record ↗Source updated 10 Sept 2026
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-2025-22777

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 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

A vulnerability was found in LibTIFF up to 4.7.0. It has been declared as critical. This vulnerability affects the function get_histogram of the file tools/tiffmedian.c. The manipulation leads to use after free. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as fe10872e53efba9cc36c66ac4ab3b41a839d5172. It is recommended to apply a patch to fix this issue.

What

A vulnerability was found in LibTIFF up to 4.7.0. It has been declared as critical. This vulnerability affects the function get_histogram of the file tools/tiffmedian.c. The manipulation leads to use after free. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as fe10872e53efba9cc36c66ac4ab3b41a839d5172. It is recommended to apply a patch to fix this issue.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

A vulnerability was found in LibTIFF up to 4.7.0. It has been declared as critical. This vulnerability affects the function get_histogram of the file tools/tiffmedian.c. The manipulation leads to use after free. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as fe10872e53efba9cc36c66ac4ab3b41a839d5172. It is recommended to apply a patch to fix this issue.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through local access may attempt exploitation with low privileges. 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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
local access → Use After Free → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-416

CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Common Vulnerability Scoring System 4.0: 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.ATNoneAttack requirements: No additional deployment or execution condition is required.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.VCLowVulnerable-system confidentiality: A successful attack can cause a limited loss.VILowVulnerable-system integrity: A successful attack can cause a limited loss.VALowVulnerable-system availability: A successful attack can cause a limited loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-416Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2026-1730Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Ein Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory
BSI · German · WID-SEC-W-2025-1654libTIFF (Tiffmedian, Thumbnail): Mehrere Schwachstellen

Ein lokaler Angreifer kann mehrere Schwachstellen in libTIFF ausnutzen, um nicht spezifizierte Angriffe auszuführen, möglicherweise um beliebigen Code auszuführen, Speicherverfälschung zu verursachen, vertrauliche Informationen preiszugeben oder einen Denial-of-Service-Zustand zu verursachen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0218Multiples vulnérabilités dans les produits VMware

e.org/CVERecord?id=CVE-2025-69420 Référence CVE CVE-2025-69421 https://www.cve.org/CVERecord?id=CVE-2025-69421 Référence CVE CVE-2025-6965 https://www.cve.org/CVERecord?id=CVE-2025-6965 Référence CVE CVE-2025-7039 https://www.cve.org/CVERecord?id=CVE-2025-7039 Référence CVE CVE-2025-7424 https://www.cve.org/CVERecord?id=CVE-2025-7424 Référence CVE CVE-2025-7425 https://www.cve.org/CVERecord?id=CVE-2025-7425 Référence CVE CVE-2025-7545 https://www.cve.org/CVERecord?id=CVE-2025-7545 Référence CVE CVE-2025-7546 https://www.cve.org/CVERecord?id=CVE-2025-7546 Référence CVE CVE-2025-8058 https://www.cve.org/CVERecord?id=CVE-2025-8058 Référence CVE CVE-2025-8176 https://www.cve.org/CVERecord?id=CVE-2025-8176 Référence CVE CVE-2025-8177 https://www.cve.org/CVERecord?id=CVE-2025-8177 Référence CVE CVE-2025-8194 https://www.cve.org/CVERecord?id=CVE-2025-8194 Référence CVE CVE-2025-8224 https://www.cve.org/CVERecord?id=CVE-2025-8224 Référence CVE CVE-2025-8225 https://www.cve.org/CVERecord?id=CVE-2025-8225 Référence CVE CVE-2025-8291 https://www.cve.org/CVERecord?id=CVE-2025-8291 Référence CVE CVE-2025-8534 https://www.cve.org/CVERecord?id=CVE-2025-8534 Référence CVE CVE-2025-8713 https://www.cve.org/CVERecord?id=CVE-2025-8713 Référence CVE CVE-2025-8714 https://www.cve.org/CVERecord?id=CVE-2025-8714 Ré

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0969Multiples vulnérabilités dans les produits VMware

.cve.org/CVERecord?id=CVE-2025-6965 Référence CVE CVE-2025-7039 https://www.cve.org/CVERecord?id=CVE-2025-7039 Référence CVE CVE-2025-7424 https://www.cve.org/CVERecord?id=CVE-2025-7424 Référence CVE CVE-2025-7425 https://www.cve.org/CVERecord?id=CVE-2025-7425 Référence CVE CVE-2025-7709 https://www.cve.org/CVERecord?id=CVE-2025-7709 Référence CVE CVE-2025-7783 https://www.cve.org/CVERecord?id=CVE-2025-7783 Référence CVE CVE-2025-7962 https://www.cve.org/CVERecord?id=CVE-2025-7962 Référence CVE CVE-2025-8058 https://www.cve.org/CVERecord?id=CVE-2025-8058 Référence CVE CVE-2025-8114 https://www.cve.org/CVERecord?id=CVE-2025-8114 Référence CVE CVE-2025-8176 https://www.cve.org/CVERecord?id=CVE-2025-8176 Référence CVE CVE-2025-8177 https://www.cve.org/CVERecord?id=CVE-2025-8177 Référence CVE CVE-2025-8194 https://www.cve.org/CVERecord?id=CVE-2025-8194 Référence CVE CVE-2025-8277 https://www.cve.org/CVERecord?id=CVE-2025-8277 Référence CVE CVE-2025-8291 https://www.cve.org/CVERecord?id=CVE-2025-8291 Référence CVE CVE-2025-8534 https://www.cve.org/CVERecord?id=CVE-2025-8534 Référence CVE CVE-2025-8556 https://www.cve.org/CVERecord?id=CVE-2025-8556 Référence CVE CVE-2025-8677 https://www.cve.org/CVERecord?id=CVE-2025-8677 Référence CVE CVE-2025-8713 https://www.cve.org/CVERecord?id=CVE-2025-8713 Ré

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0938Multiples vulnérabilités dans les produits VMware

cve.org/CVERecord?id=CVE-2025-58060 Référence CVE CVE-2025-5914 https://www.cve.org/CVERecord?id=CVE-2025-5914 Référence CVE CVE-2025-6020 https://www.cve.org/CVERecord?id=CVE-2025-6020 Référence CVE CVE-2025-6021 https://www.cve.org/CVERecord?id=CVE-2025-6021 Référence CVE CVE-2025-6395 https://www.cve.org/CVERecord?id=CVE-2025-6395 Référence CVE CVE-2025-6558 https://www.cve.org/CVERecord?id=CVE-2025-6558 Référence CVE CVE-2025-6965 https://www.cve.org/CVERecord?id=CVE-2025-6965 Référence CVE CVE-2025-7345 https://www.cve.org/CVERecord?id=CVE-2025-7345 Référence CVE CVE-2025-7425 https://www.cve.org/CVERecord?id=CVE-2025-7425 Référence CVE CVE-2025-8176 https://www.cve.org/CVERecord?id=CVE-2025-8176 Référence CVE CVE-2025-8194 https://www.cve.org/CVERecord?id=CVE-2025-8194 Référence CVE CVE-2025-8713 https://www.cve.org/CVERecord?id=CVE-2025-8713 Référence CVE CVE-2025-8714 https://www.cve.org/CVERecord?id=CVE-2025-8714 Référence CVE CVE-2025-8715 https://www.cve.org/CVERecord?id=CVE-2025-8715 Référence CVE CVE-2025-8941 https://www.cve.org/CVERecord?id=CVE-2025-8941 Référence CVE CVE-2025-9230 https://www.cve.org/CVERecord?id=CVE-2025-9230 Référence CVE CVE-2025-9231 https://www.cve.org/CVERecord?id=CVE-2025-9231 Référence CVE CVE-2025-9232 https://www.cve.org/CVERecord?id=CVE-2025-9232 Ré

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
4.0; 4.1; 4.2; 4.3; 4.4; 4.5; 4.6; 4.7.0
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. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 26 Jul 2025 · Last source change 28 Jul 2025, 14:28 UTC · CWE-416 · Use After Free

CVE recordCVE.org · 5.1
CVSS sourceCNA
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-2025-22777
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

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-2025-8176 · cve.blacktree.nl