CVE-2025-47914 | Malformed constraint may cause denial of service in golang.org/x/crypto/ssh/agent

SSH Agent servers do not validate the size of messages when processing new identity requests, which may cause the program to panic if the message is malformed due to an out of bounds read.

Published: 2025-11-19 Last update: 2025-12-11 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-47914 is rated Low Risk (22.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.02%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-47914

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-18 0.05% 0.02% -0.04%
2 2025-11-25 0.04% 0.05% +0.01%
3 2025-11-20 — 0.04% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-47914

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-47914

GitHub Security Advisory for CVE-2025-47914

GHSA-f6x5-jh6r-wrfv · Severity: medium · Ecosystem: go — golang.org/x/crypto/ssh/agent vulnerable to panic if message is malformed due to out of bounds read

OS Trackers for CVE-2025-47914

vendor priority summary link
debian not yet assigned CVE-2025-47914 not yet assigned priority: Debian including 1 source packages (golang-go.crypto), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. https://security-tracker.debian.org/tracker/CVE-2025-47914
redhat medium — https://access.redhat.com/security/cve/CVE-2025-47914
suse medium CVE-2025-47914 severity moderate: SUSE including 369 source package names (1.1.0-1.4:trivy-0.68.2-150000.1.9.1, 13.2-9.1:libsqlite3-0-3.51.3-slfo.1.1_1.1, …), 571 product×package rows across 76 product lines (Container private-registry/harbor-trivy-adapter, Container suse/sl-micro/6.0/baremetal-os-container, … (76 product lines)): Fixed 333, Known Affected 231, First Fixed 6, Known Not Affected 1. https://www.suse.com/security/cve/CVE-2025-47914/
ubuntu medium CVE-2025-47914 medium priority: Ubuntu including 4 source packages (golang-go.crypto, google-guest-agent, lxd, snapd), 32 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): needs-triage 18, not-affected 8, DNE 4, ignored 2. https://ubuntu.com/security/CVE-2025-47914

Affected software / configurations for CVE-2025-47914

Vendor Product Version Raw CPE
golang crypto < 0.45.0 cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*

References for CVE-2025-47914

cvelogic Threat Intelligence