CFITSIO through 4.7.0 Heap Out-of-Bounds Read via HCOMPRESS input_nnybble
CVSS score
6.9
EPSS probability
—
Risk score
0.7
Published
16 h ago
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Impact on My Inventory
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
0/2
Evidence confidence
%44
Short explanation
CFITSIO versions up to 4.7.0 contain a heap‑based out-of-bounds read in the HCOMPRESS tile decoder via the input_nnybble function in fits_hdecompress.c. An attacker can supply a crafted FITS file with an oversized tile geometry to crash applications or disclose limited heap memory. (S0)
Limited memory disclosure and possible denial‑of‑service threaten the reliability of astronomy data processing tools. (S0)
What should be done?
- Monitor HEASARC advisories and security bulletins (S0).
- If no patch exists, upgrade to a version newer than 4.7.0 when released.
- Add validation for FITS HCOMPRESS tile definitions before processing.
- Enable memory hardening features such as ASLR and stack canaries.
- Analyze suspicious FITS files in an isolated environment.
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Chain of evidence and sources
CVE-2026-111125, CFITSIO 4.7.0 ve öncesinde HCOMPRESS tile çözücüsünde heap out-of-bounds okuma içerir.
Yama durumu resmi kaynaklarda doğrulanamadı; durum UNKNOWN olarak rapor edilmiştir.
CVE, CISA KEV listesinde yer almıyor; aktif istismar kanıtı bulunmamaktadır.
CVSS skoru ve vektörü farklı kaynaklarda çelişmektedir (6.9 / CVSS:4.0 vs 6.1 / CVSS:3.1).
Show the technical text from the sources
CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.
CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
CWE: CWE-125
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-111125 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | HEASARC | cfitsio | 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 |
|---|---|---|---|---|
| 6.9 | CVSS V40 | MEDIUM | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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 |
| 6.9 | CVSS V4_0 | MEDIUM | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N | CVE CNA |
| 6.1 | CVSS V31 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H | NVD |
| 6.1 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/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-2026-111125 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-2026-111125 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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