CVE-2025-55271Network attack vector

Response content injection via unneutralized CRLF sequences

Published Mar 26, 2026 · Updated Mar 26, 2026

HTTP response splitting in HCL Aftermarket Cloud Digital Parts Catalog 1.0.0 allows remote attackers to inject content into responses. HCLSoftware has not disclosed which response header or input accepts unneutralized CRLF characters, so the concrete code locus remains unpublished. Exploitation requires no authentication but does require user interaction and high-complexity conditions; the vendor reports only low confidentiality impact.

CVSS severity8.8
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTTP response splitting in HCL Aftermarket Cloud Digital Parts Catalog 1.0.0 allows remote attackers to inject content into responses. HCLSoftware has not disclosed which response header or input accepts unneutralized CRLF characters, so the concrete code locus remains unpublished. Exploitation requires no authentication but does require user interaction and high-complexity conditions; the vendor reports only low confidentiality impact.

The record

CVE
CVE-2025-55271
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
HCLSoftware
Product
Aftermarket Cloud Digital Parts Catalog
Classifications
CWE-113
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=version 1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HCLSoftware · Aftermarket Cloud Digital Parts Catalogversion=version 1.0.0

Published CVSS scores

3.1HCL SoftwareCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-113Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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