CVE-2021-1313: cisco cisco ios xr software Resource Management Errors
CVSS: 8.6v3.1HighModified
Published 04-02-2021Last modified 08-11-2024
Vulnerability summary
CVE-2021-1313 is a high (CVSS 8.6) Resource Management Errors vulnerability in cisco cisco ios xr software. EPSS estimates a 1.95% chance of exploitation in the next 30 days, higher than 79.9% of scored vulnerabilities.
CVSS score
8.6/10
010
High · v3.1 (CVE.org)EPSS score
1.95%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 04-02-2021PublishedVulnerability first disclosed.
- 08-11-2024Last modifiedVulnerability information updated.
Description
Multiple vulnerabilities in the ingress packet processing function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 8.6Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HSources2 sources · 7.5–8.6
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
High 7.8Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
1.95%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
0.00 pp
From 1.95% on 19-09-2026
19-09-202619-10-2026
EPSS score1.95%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-399Resource Management ErrorsWeaknesses in this category are related to improper management of system resources.
- CWE-401Missing Release of Memory after Effective LifetimeThe product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
Affected systems
Cisco2 products
- cisco ios xr softwaren/a
- ios_xr≥ 5.0.0, < 5.2.6 | ≥ 5.3.0, < 5.3.4
1 vendor · 2 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-dos-WwDdghs2Vendor AdvisoryX Refsource CISCO