EUVD-2026-94014
GHSA-j4h6-744f-q3hq
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Data amplification during decompression causes resource consumption (A:L) with no confidentiality and no clear integrity impact; a malicious peer can trigger it remotely without auth, though compression must be negotiated.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
In sshd and ssh in OpenSSH before 10.6, there is no check for whether the maximum packet length is exceeded during decompression of highly compressed data.
AnalysisAI
Availability degradation in OpenSSH before 10.6 occurs because sshd and ssh fail to enforce the maximum packet length while decompressing highly compressed SSH data, allowing a peer on a connection with negotiated SSH compression to trigger excessive resource consumption. Exploitation requires compression (zlib or zlib@openssh.com) to be negotiated-often not the case on modern OpenSSH servers where compression is disabled or delayed until after authentication-and an active malicious or compromised SSH peer; the independent assessment scores this as remote, network-reachable, unauthenticated with low availability impact and no confidentiality or integrity impact. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
No credit card · 7-day full trial
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that SSH compression (e.g. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The input CVSS base score is 6.5 (MEDIUM) with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L, indicating a remote, network-reachable, unauthenticated issue with no confidentiality impact and only low integrity and availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: OpenSSH 10.6. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which
GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, whi
GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of
freeSSHd.exe in freeSSHd through 1.2.6 allows remote attackers to bypass authentication via a crafted session, as demons
GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, whi
OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. Rated medium se
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static
The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processin
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password a
Remote code execution in OpenSSH's sshd server (regression of CVE-2006-5051) allows unauthenticated remote attackers to
The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0 through 6.1.12, 6.2.0 through 6
A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. Rated medium severity (CVSS 6.8), this
Share
External POC / Exploit Code
Leaving vuln.today