Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-31122 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Debian Debian Linux. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 13% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2023-31122 is an out-of-bounds read vulnerability, tracked as CWE-125, that affects the mod_macro module in Apache HTTP Server versions through 2.4.57. The flaw carries a CVSS 3.1 score of 7.5 with a vector indicating network attackability, low complexity, and no required privileges or user interaction, resulting in high availability impact while leaving confidentiality and integrity unaffected.
Remote attackers can trigger the flaw over the network to induce a denial-of-service condition against an unpatched server. Because the vulnerability requires no authentication or special conditions beyond sending crafted requests, any internet-facing Apache instance running an affected version is potentially reachable.
The Apache project has published details at httpd.apache.org/security/vulnerabilities_24.html, and downstream distributions including Debian and Fedora have issued coordinated advisories that direct administrators to apply the corresponding package updates.
EPSS for the CVE rose from a low baseline to a peak of 0.0574 on 2025-01-22 before receding to the current value of 0.0040, indicating a period of increased exploitation interest well after initial disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-35448
Vulnerability Data
Out-of-bounds Read vulnerability in mod_macro of Apache HTTP Server.This issue affects Apache HTTP Server: through 2.4.57.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Vulnerability scanning and recording can discover instances of out-of-bounds reads after code is deployed.
Routine patching replaces vulnerable code containing out-of-bounds read flaws.
Secure-development practices such as bounds checking and memory-safe languages directly prevent out-of-bounds reads.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.