What is the CVSS score of CVE-2022-34998?

CVE-2022-34998 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Is there a public PoC exploit available for CVE-2022-34998?

Yes, a public proof-of-concept exploit is available for CVE-2022-34998. Prioritise patching immediately. EPSS: 0.3%.

Jpegdec CVE-2022-34998

HIGH

Classic Buffer Overflow (CWE-120)

2022-08-16 cve@mitre.org

Buffer Overflow Jpegdec

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Aug 16, 2022 - 21:15 nvd

HIGH 7.8

DescriptionNVD

JPEGDEC commit be4843c was discovered to contain a global buffer overflow via JPEGDecodeMCU at /src/jpeg.inl.

AnalysisAI

JPEGDEC commit be4843c was discovered to contain a global buffer overflow via JPEGDecodeMCU at /src/jpeg.inl. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. JPEGDEC commit be4843c was discovered to contain a global buffer overflow via JPEGDecodeMCU at /src/jpeg.inl. Affected products include: Bitbanksoftware Jpegdec.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.