CVE-2026-32775: CWE-191 Integer Underflow (Wrap or Wraparound) in libexif project libexif
CVE-2026-32775 is a high severity integer underflow vulnerability in the libexif library up to version 0. 6. 25. The flaw occurs in the exif_mnote_data_get_value function when it is passed a size of zero, causing an integer underflow that leads to buffer overwrite. This vulnerability affects the decoding of MakerNotes in EXIF data. There is no official patch or remediation level indicated at this time, and no known exploits have been reported in the wild.
AI Analysis
Technical Summary
The libexif library through version 0.6.25 contains an integer underflow vulnerability (CWE-191) in the exif_mnote_data_get_value function. When this function receives a zero size parameter, an integer underflow occurs, resulting in an overwrite of the input buffer during the decoding of MakerNotes metadata. This can lead to high impact consequences including confidentiality, integrity, and availability violations as indicated by the CVSS 3.1 base score of 7.4 with high impact on all three metrics. No patch or vendor remediation guidance is currently available.
Potential Impact
Successful exploitation of this vulnerability can cause buffer overwrite due to integer underflow, potentially leading to arbitrary code execution or denial of service. The CVSS score of 7.4 reflects high impact on confidentiality, integrity, and availability. However, no known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution when processing untrusted EXIF data with libexif, particularly MakerNotes. Avoid processing untrusted images or apply additional input validation if possible.
CVE-2026-32775: CWE-191 Integer Underflow (Wrap or Wraparound) in libexif project libexif
Description
CVE-2026-32775 is a high severity integer underflow vulnerability in the libexif library up to version 0. 6. 25. The flaw occurs in the exif_mnote_data_get_value function when it is passed a size of zero, causing an integer underflow that leads to buffer overwrite. This vulnerability affects the decoding of MakerNotes in EXIF data. There is no official patch or remediation level indicated at this time, and no known exploits have been reported in the wild.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libexif library through version 0.6.25 contains an integer underflow vulnerability (CWE-191) in the exif_mnote_data_get_value function. When this function receives a zero size parameter, an integer underflow occurs, resulting in an overwrite of the input buffer during the decoding of MakerNotes metadata. This can lead to high impact consequences including confidentiality, integrity, and availability violations as indicated by the CVSS 3.1 base score of 7.4 with high impact on all three metrics. No patch or vendor remediation guidance is currently available.
Potential Impact
Successful exploitation of this vulnerability can cause buffer overwrite due to integer underflow, potentially leading to arbitrary code execution or denial of service. The CVSS score of 7.4 reflects high impact on confidentiality, integrity, and availability. However, no known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution when processing untrusted EXIF data with libexif, particularly MakerNotes. Avoid processing untrusted images or apply additional input validation if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-03-16T06:31:35.564Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69dbe51682d89c981fa14167
Added to database: 4/12/2026, 6:31:50 PM
Last enriched: 4/12/2026, 6:46:47 PM
Last updated: 4/12/2026, 7:36:18 PM
Views: 6
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