IrfanView TIFF Wang Annotation heap-based overflow
CVSS score
2.3
EPSS probability
—
Risk score
0.2
Published
3 h ago
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Impact on My Inventory
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%55
Short explanation
A vulnerability was detected in IrfanView 4.76.0.0 on Win64 involving the TIFF Wang Annotation Handler component, resulting in a heap-based buffer overflow [S0].
The exploit for this vulnerability is now public [S0]. The vendor confirms that the TIF-Annotations option is disabled by default [S0].
What should be done?
- Follow vendor advisories
- Verify that the TIF-Annotations option remains disabled
Chain of evidence and sources
IrfanView 4.76.0.0 üzerinde TIFF Wang Annotation Handler bileşenini etkileyen yığın tabanlı tampon taşması açığı bulunmuştur.
Saldırı uzaktan gerçekleştirilebilir durumdadır ve istismarı zor olarak değerlendirilmektedir.
Satıcı, TIF-Annotations seçeneğinin varsayılan olarak kapalı olduğunu onaylamıştır.
Show the technical text from the sources
A vulnerability was detected in IrfanView 4.76.0.0 on Win64. Affected by this vulnerability is an unknown functionality of the component TIFF Wang Annotation Handler. Performing a manipulation results in heap-based buffer overflow. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit is now public and may be used. It is recommended to apply a patch to fix this issue. The vendor confirms: "[T]he TIF-Annotations option is OFF by default. Means, normal users are not affected ... the danger level for this is low".
CVSS vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CWE: CWE-122, CWE-119
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-121517 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | n/a | IrfanView | 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 |
|---|---|---|---|---|
| 5.1 | CVSS V2 | — | AV:N/AC:H/Au:N/C:P/I:P/A:P | NVD |
| 5.1 | CVSS V2_0 | — | AV:N/AC:H/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C | CVE CNA |
| 5.0 | CVSS V31 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L | NVD |
| 5.0 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | CVE CNA |
| 5.0 | CVSS V3_0 | MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | CVE CNA |
| 2.3 | CVSS V4_0 | LOW | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | CVE CNA |
| 1.3 | CVSS V40 | LOW | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD |
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-2026-121517 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-2026-121517 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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