CVE-2025-48797 is a heap-based buffer overflow vulnerability identified in the GNU Image Manipulation Program (GIMP) when processing certain TGA (Targa) image files. The flaw arises from improper handling of specially crafted TGA files, which can cause GIMP to perform out-of-bounds memory writes on the heap. This memory corruption can lead to application instability, crashes, and potentially enable an attacker to execute arbitrary code within the context of the user running GIMP. The vulnerability is present in GIMP versions included with Red Hat Enterprise Linux 7 Extended Lifecycle Support. The attack vector requires a local attacker with limited privileges to convince a user to open a malicious TGA file, thus requiring user interaction. The CVSS v3.1 base score of 7.3 indicates a high severity, with attack vector local (AV:L), low attack complexity (AC:L), requiring privileges (PR:L), and user interaction (UI:R). The impact on confidentiality, integrity, and availability is rated high, reflecting the potential for full compromise of the application and possibly the underlying system if further privilege escalation is achieved. No public exploits are currently known, but the vulnerability is published and should be considered a significant risk. The lack of available patches at the time of disclosure emphasizes the need for mitigation strategies until updates are released.

The vulnerability poses a significant risk to organizations using GIMP on Red Hat Enterprise Linux 7 Extended Lifecycle Support systems. Successful exploitation can lead to arbitrary code execution, allowing attackers to compromise the confidentiality, integrity, and availability of affected systems. This could result in unauthorized access to sensitive data, disruption of image processing workflows, and potential pivoting to other parts of the network if the compromised user has broader access. Since exploitation requires user interaction, social engineering or phishing campaigns could be used to deliver malicious TGA files. The impact is particularly critical in environments where GIMP is used to process untrusted image files or where users have elevated privileges. The absence of known exploits reduces immediate risk but does not eliminate the threat, as attackers may develop exploits over time. Organizations relying on Red Hat Enterprise Linux 7 in enterprise, government, and development environments should consider this vulnerability a high priority for remediation.

Until official patches are released, organizations should implement several specific mitigations: 1) Restrict or disable the use of GIMP for processing TGA files, especially from untrusted sources. 2) Educate users about the risks of opening unsolicited or suspicious image files, emphasizing caution with TGA files. 3) Employ application whitelisting and sandboxing techniques to limit GIMP's ability to execute arbitrary code or access sensitive system resources. 4) Monitor and restrict file sharing channels where malicious TGA files could be distributed. 5) Use endpoint detection and response (EDR) solutions to detect anomalous behavior related to GIMP processes. 6) Regularly audit and minimize user privileges to reduce the impact of potential exploitation. 7) Once patches become available from Red Hat or GIMP maintainers, prioritize their deployment in affected environments. 8) Consider network segmentation to isolate systems running GIMP from critical infrastructure to limit lateral movement.