Security readout for executives and security teams
Plain-English summary
This PHP flaw affects EXIF image metadata parsing. A malicious image processed with exif_read_data() could make PHP expose one byte of uninitialized memory or crash the process. The business risk is mainly information disclosure and availability impact in applications that accept or process uploaded images.
Executive priority
Treat as a moderate-priority patching item. Prioritize internet-facing upload and media-processing services because exploitation could crash PHP workers or leak limited memory content, but the source bundle does not support emergency active-exploitation handling.
Technical view
CVE-2020-7064 is a use-of-uninitialized-value/out-of-bounds read issue in PHP's EXIF parser when exif_read_data() handles crafted EXIF data. The bundle lists affected PHP 7.2.x, 7.3.x before 7.3.16, and 7.4.x before 7.4.4, with possible disclosure or crash.
Likely exposure
Exposure is most likely in PHP applications that parse user-supplied images or metadata using exif_read_data(), including upload workflows, media libraries, CMS features, and backend image-processing jobs running affected PHP versions.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. The attack vector is network-reachable when an application accepts attacker-controlled images and passes them to vulnerable PHP EXIF parsing logic.
Researcher notes
Evidence supports a PHP EXIF parsing memory-read flaw with CVSS 6.5 and CWE-125. The provided version text appears specific but should be reconciled with vendor advisories during validation, especially for PHP 7.2.x fixed-release boundaries.
Mitigation direction
- Upgrade PHP to a vendor-fixed release for the deployed branch.
- Apply distribution security updates from Debian, Ubuntu, SUSE, Oracle, or appliance vendors where applicable.
- Check vendor guidance for bundled PHP in NetApp, Oracle, and Tenable-affected products.
- Reduce exposure by avoiding EXIF parsing on untrusted images where not required.
- Monitor image-processing services for crashes after suspicious uploads.
Validation and detection
- Inventory PHP versions across web, worker, and appliance environments.
- Identify code paths using exif_read_data() on uploaded or remote images.
- Confirm security updates are applied through OS package or PHP runtime records.
- Review upload and media-processing logs for unexplained PHP crashes.
- Verify vendor advisories for embedded PHP in third-party platforms.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-125: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-7064 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L3.92.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- [debian-lts-announce] 20200426 [SECURITY] [DLA 2188-1] php5 security updateCVE reference · mailing-list, x_refsource_MLIST
- USN-4330-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- USN-4330-2CVE reference · vendor-advisory, x_refsource_UBUNTU
- DSA-4717CVE reference · vendor-advisory, x_refsource_DEBIAN
- DSA-4719CVE reference · vendor-advisory, x_refsource_DEBIAN
- https://bugs.php.net/bug.php?id=79282CVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20200403-0001/CVE reference · x_refsource_CONFIRM
- https://www.oracle.com/security-alerts/cpujan2021.htmlCVE reference · x_refsource_MISC
- https://www.tenable.com/security/tns-2021-14CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.