How severe is CVE-2018-7994?

CVE-2018-7994 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-7994 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7994?

CVE-2018-7994 primarily affects Huawei Ips Module. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-7994?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-7994 published?

CVE-2018-7994 was published on 2018-07-31 and last updated on 2026-06-17.

CVE-2018-7994

CVE-2018-7994 is a high-severity vulnerability in Huawei Ips Module with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-772.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-772
Affected product: Huawei Ips Module
Published: 2018-07-31
Last modified: 2026-06-17

Description

Some Huawei products IPS Module V500R001C50; NGFW Module V500R001C50; V500R002C10; NIP6300 V500R001C50; NIP6600 V500R001C50; NIP6800 V500R001C50; Secospace USG6600 V500R001C50; USG9500 V500R001C50 have a memory leak vulnerability. The software does not release allocated memory properly when processing Protal questionnaire. A remote attacker could send a lot questionnaires to the device, successful exploit could cause the device to reboot since running out of memory.

Frequently asked questions

What is CVE-2018-7994?: Some Huawei products IPS Module V500R001C50; NGFW Module V500R001C50; V500R002C10; NIP6300 V500R001C50; NIP6600 V500R001C50; NIP6800 V500R001C50; Secospace USG6600 V500R001C50; USG9500 V500R001C50 have a memory leak vulnerability. The software does not release allocated memory properly when processing Protal questionnaire. A remote attacker could send a lot questionnaires to the device, successful exploit could cause the device to reboot since running out of memory.
How severe is CVE-2018-7994?: CVE-2018-7994 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-7994 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7994?: CVE-2018-7994 primarily affects Huawei Ips Module. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-7994?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-7994 published?: CVE-2018-7994 was published on 2018-07-31 and last updated on 2026-06-17.

References

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20180704-01-firewall-en

Affected products (8)

cpe:2.3:o:huawei:ips_module:v500r001c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ngfw_module:v500r001c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ngfw_module:v500r002c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6300:v500r001c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6600:v500r001c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6800:v500r001c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:secospace_usg6600:v500r001c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:usg9500:v500r001c50:*:*:*:*:*:*:*

Other CWE-772 vulnerabilities

CVE-2020-12134 — Critical (CVSS 9.8): Nanometrics Centaur through 4.3.23 and TitanSMA through 4.2.20 mishandle access control for the syslog log.
CVE-2017-15032 — Critical (CVSS 9.8): ImageMagick version 7.0.7-2 contains a memory leak in ReadYCBCRImage in coders/ycbcr.c.
CVE-2017-14138 — Critical (CVSS 9.8): ImageMagick 7.0.6-5 has a memory leak vulnerability in ReadWEBPImage in coders/webp.c because memory is not freed in…
CVE-2017-11641 — Critical (CVSS 9.8): GraphicsMagick 1.3.26 has a Memory Leak in the PersistCache function in magick/pixel_cache.c during writing of Magick…
CVE-2020-14339 — High (CVSS 8.8): A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process. This…
CVE-2018-19760 — High (CVSS 8.8): cfg_init in confuse.c in libConfuse 3.2.2 has a memory leak.

Browse all CWE-772 vulnerabilities →