CVE-2026-46597: CWE-191: Integer Underflow (Wrap or Wraparound) in golang.org/x/crypto golang.org/x/crypto/ssh
CVE-2026-46597 is a high-severity integer underflow vulnerability in the golang.org/x/crypto/ssh package. It is caused by an incorrect cast from bytes to int, leading to a server-side panic in the AES-GCM packet decoder when processing crafted inputs. This vulnerability results in a denial of service but does not impact confidentiality or integrity. There is no confirmed patch or official remediation available at this time. No known exploits have been reported in the wild. Users should monitor vendor advisories for updates.
AI Analysis
Technical Summary
CVE-2026-46597 is an integer underflow (CWE-191) vulnerability in the golang.org/x/crypto/ssh package. The flaw arises from an incorrect cast from bytes to int, which causes a server-side panic in the AES-GCM packet decoder when it processes specially crafted inputs. This leads to a denial of service condition without affecting data confidentiality or integrity. The vulnerability has a CVSS 3.1 base score of 7.5 (high severity) with network attack vector, low attack complexity, no privileges required, no user interaction, and impacts availability only. There is currently no official fix or patch available, and no known exploits have been observed in the wild.
Potential Impact
Successful exploitation causes a denial of service due to a server-side panic in the AES-GCM packet decoder. Confidentiality and integrity of data are not affected. The vulnerability can be triggered remotely without authentication or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor official golang.org/x/crypto advisories for updates. No other specific mitigations are provided.
CVE-2026-46597: CWE-191: Integer Underflow (Wrap or Wraparound) in golang.org/x/crypto golang.org/x/crypto/ssh
Description
CVE-2026-46597 is a high-severity integer underflow vulnerability in the golang.org/x/crypto/ssh package. It is caused by an incorrect cast from bytes to int, leading to a server-side panic in the AES-GCM packet decoder when processing crafted inputs. This vulnerability results in a denial of service but does not impact confidentiality or integrity. There is no confirmed patch or official remediation available at this time. No known exploits have been reported in the wild. Users should monitor vendor advisories for updates.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-46597 is an integer underflow (CWE-191) vulnerability in the golang.org/x/crypto/ssh package. The flaw arises from an incorrect cast from bytes to int, which causes a server-side panic in the AES-GCM packet decoder when it processes specially crafted inputs. This leads to a denial of service condition without affecting data confidentiality or integrity. The vulnerability has a CVSS 3.1 base score of 7.5 (high severity) with network attack vector, low attack complexity, no privileges required, no user interaction, and impacts availability only. There is currently no official fix or patch available, and no known exploits have been observed in the wild.
Potential Impact
Successful exploitation causes a denial of service due to a server-side panic in the AES-GCM packet decoder. Confidentiality and integrity of data are not affected. The vulnerability can be triggered remotely without authentication or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor official golang.org/x/crypto advisories for updates. No other specific mitigations are provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Go
- Date Reserved
- 2026-05-15T17:35:00.813Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0fcdade1370fbb487d5133
Added to database: 05/22/2026, 03:29:49 UTC
Last enriched: 07/08/2026, 13:55:38 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 76
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