Libtiff: libtiff: heap-buffer overflow via numeric truncation in the jpeg raw passthrough
CVSS score
6.1
EPSS probability
%0.1
Risk score
0.0
Published
1 mo ago
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Vulnerability description
DayBreach CVE AI Research
CVE-2026-18495 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-18495 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Red Hat | Red Hat Hardened Images | View |
| 2 | Red Hat | Red Hat Ceph Storage 4 | View |
| 3 | Red Hat | Red Hat Ceph Storage 6 | View |
| 4 | Red Hat | Red Hat Ceph Storage 7 | View |
| 5 | Red Hat | Red Hat Ceph Storage 8 | View |
| 6 | Red Hat | Red Hat Ceph Storage 9 | View |
| 7 | Red Hat | Red Hat Enterprise Linux 10 | View |
| 8 | Red Hat | Red Hat Enterprise Linux 6 | View |
| 9 | Red Hat | Red Hat Enterprise Linux 7 | View |
| 10 | Red Hat | Red Hat Enterprise Linux 8 | View |
| 11 | Red Hat | Red Hat Enterprise Linux 9 | View |
| 12 | Red Hat | Red Hat Hardened Images | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 6.1 | CVSS V31 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H | NVD |
| 6.1 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-18495 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-18495 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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