The xmlParseConditionalSections function in parser.c in libxml2 does not properly skip intermediary entities when it stops parsing invalid input, which allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via crafted XML data, a different vulnerability than CVE-2015-7941.
Conclusion & alert: CVE-2015-7942 is rated High Exploit Risk (77.7/100): CVSS Medium severity, with high exploitation likelihood (EPSS 4.74%, 91th percentile). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.73% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.01% | 4.74% | +3.73% |
| 2 | 2026-05-13 | 1.20% | 1.01% | -0.19% |
| 3 | 2026-05-12 | — | 1.20% | — |
Full EPSS history (25 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2015-7942 not yet assigned priority: Debian including 1 source packages (libxml2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2015-7942 |
gentoo
|
normal | CVE-2015-7942: 1 GLSA(s) (201701-37), 1 atom(s) (dev-libs/libxml2); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-7942 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2015-7942 |
suse
|
low | CVE-2015-7942 severity low: SUSE including 370 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 524 product×package rows across 72 product lines (HPE Helion OpenStack 8, SUSE Liberty Linux 7, … (72 product lines)): Known Affected 231, Fixed 220, Known Not Affected 73. | https://www.suse.com/security/cve/CVE-2015-7942/ |
ubuntu
|
medium | CVE-2015-7942 medium priority: Ubuntu including 1 source packages (libxml2), 5 status rows across 5 suites (precise, trusty, upstream, vivid, wily): released 5. | https://ubuntu.com/security/CVE-2015-7942 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| hp | icewall_federation_agent | 3.0 | cpe:2.3:a:hp:icewall_federation_agent:3.0:*:*:*:*:*:*:* |
| hp | icewall_file_manager | 3.0 | cpe:2.3:a:hp:icewall_file_manager:3.0:*:*:*:*:*:*:* |
| debian | debian_linux | 7.0 | cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| apple | iphone_os | <= 9.2.1 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | mac_os_x | <= 10.11.3 | cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* |
| apple | tvos | <= 9.1 | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
| apple | watchos | <= 2.1 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 15.04 | cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 15.10 | cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* |
| xmlsoft | libxml2 | 2.9.2 | cpe:2.3:a:xmlsoft:libxml2:2.9.2:*:*:*:*:*:*:* |