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CVE-2025-31958· NVD / CVE Program· CNA HCL

HCL BigFix Service Management (SM) is susceptible to HTTP Request Smuggling

HCL BigFix Service Management is susceptible to HTTP Request Smuggling.  HTTP request smuggling vulnerabilities arise when websites route HTTP requests through web servers with inconsistent HTTP parsing. HTTP Smuggling exploits inconsistencies in request parsing between front-end and back-end servers, allowing attackers to bypass security controls and perform attacks like cache poisoning or request hijacking.

HighCVSS 8.2 · v3.1—No exploit No fix recorded

Noroxi analysis

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Published
Apr 21, 2026
Updated
Jun 17, 2026
EPSS
0.2% · 7th percentile
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Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
8.2
CNA · HCL
3.7
4.5 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
hcltechbigfix service management

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • hcltech bigfix service management23.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (HCL). Independent of NVD's CPE analysis and usually ahead of it.

  • HCLSoftware BigFix Service Management (SM)

    • 23affected

Same product

hcltech: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-31973HCL BigFix Service Management (SM) is susceptible to a Configuration – 'Insecure Use of Base Image Version'
    39Monitor
  • CVE-2025-52613HCL BigFix Service Management (SM) is affected by use of a vulnerable component
    35Monitor
  • CVE-2024-30151HCL BigFix Service Management (SM) is susceptible to Broken Access Control Vulnerability
    33Monitor
  • CVE-2025-31976HCL BigFix Service Management (SM) is vulnerable to insufficiently protected credentials
    30Monitor
  • CVE-2025-31974HCL BigFix Service Management (SM) is susceptible to a Root File System Not Mounted as Read-Only
    28Monitor
  • CVE-2025-31985HCL BigFix Service Management (SM) is affected by a security misconfiguration due to a missing or insecure “X-Content-Type-Options” header
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records