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CVE-2017-17305

22
FAUCET Score

CVE-2017-17305 describes a Bleichenbacher Oracle vulnerability in the IPSEC IKEv1 implementations of several Huawei Firewall products, including specific versions of the USG2205BSR, USG2220BSR, USG5120BSR, and USG5150BSR. This medium-severity vulnerability (CVSS 5.9) allows remote attackers to decrypt IPSEC tunnel ciphertext data by leveraging the RSA padding oracle, impacting the security of IPSec tunnels. While the attack complexity is high, it requires no user interaction. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV listing, though it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
v300r001c10spc600CPE matchmatch criteria
cpe:2.3:o:huawei:usg2205bsr_firmware:v300r001c10spc600:*:*:*:*:*:*:*
v300r001c00CPE matchmatch criteria
cpe:2.3:o:huawei:usg2220bsr_firmware:v300r001c00:*:*:*:*:*:*:*
v300r001c00CPE matchmatch criteria
cpe:2.3:o:huawei:usg5120bsr_firmware:v300r001c00:*:*:*:*:*:*:*
v300r001c00CPE matchmatch criteria
cpe:2.3:o:huawei:usg5150bsr_firmware:v300r001c00:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.04%
Probability of exploitation in next 30 days
EPSS Percentile
60.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0104 is in the 21st percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

huawei.com / en/psirt/security-advisories/huawei-sa-20180813-01-Bleichenbacher-en
Vendor Advisory