CVE-2025-61732VulnerabilityPublished 1 Apr 2026Updated 16 Oct 2026

Red Hat Security Advisory: OpenShift Container Platform 4.19.27 bug fix and security update

Affects Red Hat golangSource GCVE Database

Mentioned vulnerabilities

Authoritative record:CVE-2025-61732· High 8.6

Not known to be exploited · CVSS 8.6 High · fixed in Red Hat package updates : patch the Red Hat redhat/openshift-container-platform package soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score

8.6High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 1.25.7, 1.24.13, 4.19.27

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

Attack Vector: Local
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Changed
Confidentiality: High
Integrity: High
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 5 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade golang to 1.25.7 or 1.24.13; the Red Hat redhat/openshift-container-platform package to 4.19.27.

Affected software

Product	Affected	Fixed in
Bitnamigolang`pkg:bitnami/golang`Other threats	Affected <1.24.13 >=1.25.0-0 <1.25.7	Fixed in 1.24.13 1.25.7
Red Hatredhat/openshift-container-platform`pkg:rpm/redhat/openshift-container-platform`Other threats	Affected <4.19.27 >=4.19.0	Fixed in 4.19.27

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in Red Hat OpenShift Container Platform version 4.19.27. Users should upgrade to this version by applying the updated container images and RPM packages as per Red Hat's official advisories. Instructions for upgrading clusters are available in the Red Hat documentation. No additional mitigations are specified beyond applying the official update. Red Hat manages remediation for this on-premise/private cloud product; users must perform the upgrade to fully mitigate the vulnerability.

Description

This update for go1.25-openssl fixes the following issues - Update to version go1.25.12 (bsc#1244485). - CVE-2025-61732: cmd/cgo: discrepancy between Go and C/C++ comment parsing allows for C code smuggling (bsc#1257692). - CVE-2025-68121: crypto/tls: Config.Clone copies automatically generated session ticket keys, session resumption does not account for the expiration of full certificate chain (bsc#1256818). - CVE-2026-25679: net/url: reject IPv6 literal not at start of host (bsc#1259264). - CVE-2026-27139: os: FileInfo can escape from a Root (bsc#1259268). - CVE-2026-27140: cmd/go: trust layer bypass when using cgo and SWIG (bsc#1261653). - CVE-2026-27142: html/template: URLs in meta content attribute actions are not escaped (bsc#1259265). - CVE-2026-27143: cmd/compile: possible memory corruption after bound check elimination (bsc#1261654). - CVE-2026-27144: cmd/compile: no-op interface conversion bypasses overlap checking (bsc#1261655). - CVE-2026-27145: crypto/x509: split candidate hostname only once (bsc#1267450). - CVE-2026-32280: crypto/x509: unexpected work during chain building (bsc#1261656). - CVE-2026-32281: crypto/x509: inefficient policy validation (bsc#1261657). - CVE-2026-32282: os: Root.Chmod can follow symlinks out of the root on Linux (bsc#1261658). - CVE-2026-32283: crypto/tls: multiple key update handshake messages can cause connection to deadlock (bsc#1261659). - CVE-2026-32288: archive/tar: unbounded allocation when parsing old format GNU sparse map (bsc#1261660). - CVE-2026-32289: html/template: JS template literal context incorrectly tracked (bsc#1261661). - CVE-2026-33811: net: crash when handling long CNAME response (bsc#1264508). - CVE-2026-33814: net/http: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1264506). - CVE-2026-39817: cmd/go: "go tool pack" does not sanitize output paths (bsc#1264505). - CVE-2026-39819: cmd/go: "go bug" follows symlinks in predictable temporary filenames (bsc#1264504). - CVE-2026-39820: net/mail: quadratic string concatentation in consumeComment (bsc#1264503). - CVE-2026-39822: os: Root escape via symlink plus trailing slash (bsc#1271014). - CVE-2026-39823: html/template: bypass of meta content URL escaping causes XSS (bsc#1264509). - CVE-2026-39825: net/http/httputil: ReverseProxy forwards queries with more than urlmaxqueryparams parameters (bsc#1264500). - CVE-2026-39826: html/template: escaper bypass leads to XSS (bsc#1264507). - CVE-2026-39836: net: panic in Dial and LookupPort when handling NUL byte on Windows (bsc#1264501). - CVE-2026-42499: net/mail: quadratic string concatenation in consumePhrase (bsc#1264502). - CVE-2026-42501: cmd/go: malicious module proxy can bypass checksum database (bsc#1264499). - CVE-2026-42504: mime: quadratic complexity in WordDecoder.DecodeHeader (bsc#1267442). - CVE-2026-42505: crypto/tls: omit PSK in ECH outer client hello (bsc#1271015). - CVE-2026-42507: net/textproto: arbitrary input are included in errors without any escaping (bsc#1267444).

Impact

The vulnerability allows an attacker to embed and execute arbitrary code in the compiled cgo binary by exploiting a comment parsing discrepancy. This can lead to significant system compromise on affected Red Hat OpenShift Container Platform 4.19 deployments, especially when building untrusted Go modules using cgo. The impact includes potential unauthorized code execution with high confidentiality and integrity impact. No known exploits in the wild have been reported at this time.

Summary

CVE-2025-61732 affects the cmd/cgo tool in the Go programming language toolchain. The vulnerability is caused by a difference in how Go and C/C++ comments are parsed, which enables an attacker to embed malicious code inside comments that are then smuggled into the compiled cgo binary. This flaw can be exploited when building untrusted Go modules that use cgo, potentially allowing arbitrary code execution and system compromise. The issue impacts Red Hat Enterprise Linux and OpenShift Container Platform 4.19. Red Hat has released OpenShift Container Platform 4.19.27 with updated container images and RPM packages to fix this vulnerability. Detailed upgrade instructions and image digests are provided by Red Hat. The CVSS v3 base score assigned by Red Hat is 7.4 (High), reflecting network attack vector, high attack complexity, no privileges required, and high confidentiality and integrity impact.

CWE-94Improper Control of Generation of Code (Code Injection) (opens in a new tab)
Base weaknessLikelihood of exploit: MediumCWE Top 25 (2025): #10OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
Architecture and Design · Refactoring
Refactor your program so that you do not have to dynamically generate code.
Architecture and Design
Run your code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which code can be executed by your product.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
OWASP Cheat Sheets
Server Side Request Forgery Prevention (opens in a new tab)
Unvalidated Redirects and Forwards (opens in a new tab)
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
OWASP ASVS 4.0.3
V5.2.8 (opens in a new tab)
V5.2.5 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
Leverage Executable Code in Non-Executable Files (opens in a new tab)
Manipulating User-Controlled Variables (opens in a new tab)
Code Injection (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 16 Aug 2026, 17:20 UTC

WeaknessesCWE-94

Technical details

References

Community reviews

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